Malicious PDF — malware analysis report

Static analysis result for SHA-256 80eb2ac4501f44cb…

MALICIOUS

PDF

43.3 KB Created: 2020-08-25 11:22:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c0b0cd972df93a6b57e7ec850ca25f2 SHA-1: 780606df4493e575fb824ecc1ead0e8575480287 SHA-256: 80eb2ac4501f44cb8d19aa1d58281a1f660ac44d9093e79e7428d66f199b0408
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, including one pointing to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to website templates, which is consistent with the redirector's keyword. The presence of a large number of external PDF links further indicates a link farm or SEO abuse tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.com/pify?keyword=free+blank+website+layout+templates
    • http://files.aineking.net/uploads/1/3/1/4/131406826/2454d3.pdf
    • http://files.firstathens.org/uploads/1/3/2/7/132710687/9347935.pdf
    • http://gepej.yogadiversityinitiative.org/uploads/1/3/1/4/131437261/laroli_pezogijavamu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/2286/6839/files/sorevesabipujesisoxaluku.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/george_bernard_shaw_arms_and_the_man.pdf
    • https://cdn.shopify.com/s/files/1/0432/1515/9458/files/marky_mark_good_vibrations_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0434/0632/7975/files/39043553890.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/charmed_season_1_episode_22.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/minirefotapobizezuloxot.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/28362963205.pdf
    • https://cdn.shopify.com/s/files/1/0432/9455/6320/files/43466004817.pdf
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/lenny_face_middle_finger.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://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000617b.bin
7ef84ba4f975689624a8bcf1e326a8911dcff8383b039fdc916b651473e9f5a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x617B 5320 bytes
font_01_sfnt_off00007387.bin
72a3fe65f0a21df30f240897224061cfa351088b80a4eb601fb5defb198ec993
pdf-font-stream PDF embedded font (sfnt) at offset 0x7387 2268 bytes
font_02_sfnt_off00007d99.bin
a7d6bc30bdba4bbf4f8cac7b40c0d96e73ffe3e707ea2b2201377aa9292605b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D99 10132 bytes