Malicious PDF — malware analysis report

Static analysis result for SHA-256 d74169fe113add5f…

MALICIOUS

PDF

87.7 KB Created: 2021-07-22 00:07:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ada075412243ab4a53199ef7c74f4104 SHA-1: f6da298ea85db34479f6cda3b6b9744e6906abd5 SHA-256: d74169fe113add5fee632f79701a955cfbca24f4a1625d27faf09f0781d6878e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'irlanc.ru', which is likely used for phishing or to download a secondary payload. No scripts were extracted, but the presence of the malicious URL and the ML/ClamAV detections strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://irlanc.ru/square?utm_term=political+censorship+examples
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7fd3e48fdc2594042261e/1625816382614/red_and_green_markers_boating.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f53d431db272198fadd584/1626684739879/1800_mm_to_feet.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f5ed77043661189473abb1/1626729847650/ziniguvisuguminigenub.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec85f5c3fb560d26f31d3a/1626113525400/5583862704.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f8701610b9973afb24c4da/1626894358649/69796574283.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f71cf9433d812173a0ec69/1626807545224/sumrall_physical_therapy.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee0e888feeeb055d965db8/1626214024985/16449628590.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee0681d6548a387fd73de3/1626211969386/hindu_names_for_boys_with_r.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8e51a1448b061984597a5/1625875738842/91835081581.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec93b19c874e7142491888/1626117041347/tuxifewufuki.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8df43b68d8f0f4bf4925e/1625874244072/xujesefiga.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7b5a76e46386ca3be8734/1625798055318/37149200278.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f7277e1980df0924cc61fd/1626810238769/word_link_level_538.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f473f20b1749089219a8b0/1626633202789/91162488331.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f83fc0f880d33cf5f4c61f/1626881985046/hole_in_palm_of_hand_dream_meaning.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60eca7d2704a383bbedd153d/1626122194914/your_vs_you_re_worksheet.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f40f3722602c08caf6e17d/1626607415864/study_material_for_ssc.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f4081e1ad9bf1c32bad2e8/1626605598991/plural_form_of_hypothesis.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee2cf36d75c50a5d42aae4/1626221811280/leruvozegotazasezogifel.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e88d80f0aac570e73a01b5/1625853312666/breast_pain_on_sides_and_bottom.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f04e7656e3e7428c630951/1626361462618/all_present_tenses_exercises.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f3af7d668793736d35af61/1626582910343/37678591868.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec90de4f558d0bf39cd5fb/1626116319054/watch_the_adventures_of_robin_hood_1938_online_free.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e923eaf229ba2ea8371577/1625891818537/color_by_addition_free_printable.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f395.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF395 16792 bytes
font_01_sfnt_off00010bac.bin
e8f4a5eea0e973f0ad0d17775bd85a732b25d32ae2947a38a53a7b700ecdf7ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAC 10740 bytes
font_02_sfnt_off00012429.bin
19f70fdb482579cba424d56f1cd1fc5c4a2685733efca3fb3dd4cc930e9469bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x12429 17540 bytes