Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc7bd07eb1ae04f…

MALICIOUS

PDF

45.0 KB Created: 2020-08-08 03:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15ab98a5ae7ab27b720d55887afea915 SHA-1: c3600c31c295c2eaf265eb319acd49efac392b85 SHA-256: 7bc7bd07eb1ae04f14dd1ad7d6666c17624b84666b0e4017009ce023491f4b9f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector, suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness. The document body and embedded links are designed to trick users into clicking through to potentially harmful content, masquerading as an infographic.

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.cc/pify?keyword=bulletproof+diet+infographic+pdf
    • http://files.moldingconfidentme.net/uploads/1/3/1/3/131379732/6933334.pdf
    • http://files.russaultmotorsports.com/uploads/1/3/1/4/131452997/nikodusabenusume.pdf
    • http://lozevak.inkwellretreats.org/uploads/1/3/0/8/130873851/5035036.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/9289/2061/files/79019622105.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/19291980990.pdf
    • https://cdn.shopify.com/s/files/1/0435/6879/1713/files/fubawipivikukiluralize.pdf
    • https://cdn.shopify.com/s/files/1/0440/5523/2677/files/ayurvedic_medicine_book_in_bengali.pdf
    • https://cdn.shopify.com/s/files/1/0433/2804/5209/files/minecraft_max_enchantment.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/50945085903.pdf
    • https://cdn.shopify.com/s/files/1/0434/3293/5574/files/earthquake_terror.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vijufetibumumupaxewaromuw.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/wamenaziluz.pdf
    • https://cdn.shopify.com/s/files/1/0434/5593/8720/files/tegadon.pdf
    • https://cdn.shopify.com/s/files/1/0432/5471/0427/files/wesedufa.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_off000061c7.bin
1fa12e39b8f14388b75dc9422583b6de6819d257c119e4844dd0b8ab78bc4119
pdf-font-stream PDF embedded font (sfnt) at offset 0x61C7 5172 bytes
font_01_sfnt_off00007356.bin
602d122e2558ae08b17d1bdc6f099997e587942f9ea8f642ee1575a69ab08f2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7356 10632 bytes
font_02_sfnt_off000097b4.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x97B4 4324 bytes