Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce74bed5edfd101a…

MALICIOUS

PDF

96.1 KB Created: 2021-07-22 05:25:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 9d36bb52fc1b2b599c8afc0a9f5c721d SHA-1: 21e56de26ac189722d2d71ad57a1618fa82db825 SHA-256: ce74bed5edfd101a89cbc667255513fbd526661ff15701f15c868e4f476cb12b
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. Heuristics identified an image lure linking to an SEO redirector, which is a common phishing tactic. Although no scripts were extracted, the presence of a redirector URL suggests an attempt to lure the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://feedproxy.google.com/~r/sq/ugae/~3/AnJPYMJXbyQ/square?utm_term=eight+of+pentacles+yes+no PDF link annotation
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f81e5195055530dd1d4de4/1626873425818/dufamu.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee80ed7d49fb55d62b1f41/1626243309495/maths_mileage_class_8_solutions.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f8a9db4f5bfc186c3c5c37/1626909147631/fixed_on_you_laurelin_paige_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e833cfafd06e4982edeb4f/1625830351409/57590409841.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ed5111c1f2f61945a25c6e/1626165521878/46785354776.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8b1e668ba31612b6d041/1626114846641/podewolevupu.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f067cfac785a4b5bac19cb/1626367951312/pipobuwaxujalitav.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ed9b9cf90efc25ed7442d9/1626184604157/deductible_in_insurance_means.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ede739cc8e436e466645fe/1626203961503/43716524009.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f3a4ff3a33e4096ddfcbe9/1626580223602/words_that_start_with_a_and_end_with_q.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f5d5c396572c53b8dc9898/1626723779293/sin_and_love.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec906351a87c5d75ace5b1/1626116195646/average_pay_for_surrogate_mothers.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee1f9cbb85ab7f02babbc0/1626218396310/leave_her_johnny_nathan_evans.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f750fa452e3f48c2be121b/1626820858398/cuvee_chasseur_2019.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f60e0a3a00621e5482cdc0/1626738186316/brett_young_would_you_wait_for_me_meaning.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f394dd668793736d34b851/1626576093821/cbse_class_10_social_science_sample_paper_2021_with_solution.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f50305c4d0d61e674c24be/1626669829892/89321126664.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f5618c731d8c7c6f157f14/1626694028707/the_magic_online_read.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8c76dd2f17c4cdf404bdd/1625868141740/vugafe.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f7d5250f31d77fba3bc122/1626854693637/lcm_of_10_5_20.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec9c570e7a3c5fba3fcb85/1626119255471/35594644967.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f560a0a8f65e35b6f0e30f/1626693793144/sugepukatofiresikalonerub.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60eda7523680ef421b55a8a1/1626187602400/9210188173.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f12360e75c7a046d9c7829/1626415968634/wipimidebimojukasopakitod.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11142 17636 bytes
SHA-256: 3cfbc9ab0c58118d553efdeb2c9896bf4191aae79e04866dedcbf0c00cb33d95
font_01_sfnt_off00013f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F40 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15757 10756 bytes
SHA-256: 752b2c2d2d06fc987b25add984f2a8a11b19af5c035375217551d51b887d28f8

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