Malicious PDF — malware analysis report

Static analysis result for SHA-256 e919df501d342f6e…

MALICIOUS

PDF

73.4 KB Created: 2021-03-28 23:14:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 708c49ab2dd895153846db059ae3143b SHA-1: ea597a1eead7a592fcf479f902479570f4984ce4 SHA-256: e919df501d342f6e02d59c1f9bdf404ef6e6ff700d3a3e5d8182c2ed425d48df
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://golowaki.ru/wix?keyword=jvc+rx+507v+receiver+manual PDF link annotation
    • https://cdn.sqhk.co/mogizufofuj/cgd60ii/70157811065.pdfIn PDF document text
    • https://cdn.sqhk.co/fugutexifi/e7ibxUo/nejonoxafalasipeviwe.pdfIn PDF document text
    • http://rapiwanijisage.scienceontheweb.net/parker_pneumatic_cylinder.pdfIn PDF document text
    • http://bewizasosu.sportsontheweb.net/6437811475.pdfIn PDF document text
    • http://zumanidoxup.medianewsonline.com/emma_jane_austen_character_analysis.pdfIn PDF document text
    • https://cdn.sqhk.co/nawiwola/jjj4jhY/sanicompact_48_toilet.pdfIn PDF document text
    • http://fafikup.scienceontheweb.net/volazuwalesib.pdfIn PDF document text
    • https://cdn.sqhk.co/zetuzire/jeIigpd/swat_movie_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/razotefo/fThff0S/ditefirunerufu.pdfIn PDF document text
    • https://cdn.sqhk.co/dudilirugido/BibE1ja/ninja_run_game_download_java.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/844ccfaf-e182-4e92-ba96-eb0417763639/wilisepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31d5928b-0220-4f2b-a3aa-bf54d907f458/the_death_cure_full_movie_google_drive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bcb10f8-6857-4dfc-b745-158d8db44aba/game_of_thrones_head_of_the_dragon_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/lagu_man_ana_laulakum_dj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b08eab67-aaee-42c3-ba84-4bc5ed97f6fb/53325361112.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/what_are_the_three_magical_books_of_solomon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efeec789-af73-4509-ba16-7facdde80f26/what_are_the_symptoms_of_a_bad_ignition_lock_cylinder.pdfIn PDF document text
    • http://mewabetowa.myartsonline.com/gebagetux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b92db5a3-0b7a-4373-8c4f-96a2e84a3ffa/properties_of_matter_review_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea9d1ac6-4323-4d06-984a-2097ff58e7ff/rikunesajiwu.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA7 5232 bytes
SHA-256: 6a7036664f2c5810c60a7245200060f429b8cea80bfa560816b078c288ce6970
font_01_sfnt_off0000f16e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16E 12496 bytes
SHA-256: e51f0ca3c3c431595b653910d51bb7021e83845a4f4d440b43de40fc39e53a7e

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