Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a25742f87848214…

MALICIOUS

PDF

46.8 KB Created: 2020-08-07 19:09:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e30e574319f9bb81197234e5b6468fb3 SHA-1: 7d86e463f1b341b28c1c96edcafbc8660aed6b79 SHA-256: 3a25742f87848214aae9a1fcea7e8de8371f524f4bee11766f0b495a9dc36e24
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a known malicious domain, ttraff.com, which is likely part of a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains the text 'Verbal ability aptitude test pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for malicious content.

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=verbal+ability+aptitude+test+pdf
    • http://files.mariselaoropeza.com/uploads/1/3/1/8/131856121/dobatusij.pdf
    • http://files.bluemarlin3grancanaria.com/uploads/1/3/0/9/130969545/8278960.pdf
    • http://files.whistlerhalfmarathon.com/uploads/1/3/0/7/130775732/fubusolekekixobus.pdf
    • https://cdn.shopify.com/s/files/1/0436/9648/8613/files/fixuvuluwetuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53981477141.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/80591500886.pdf
    • https://cdn.shopify.com/s/files/1/0447/4011/6629/files/up_board_maths_books_for_class_8.pdf
    • https://cdn.shopify.com/s/files/1/0436/3173/9033/files/skitarii_codex_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0438/1841/8333/files/14_allergene_liste.pdf
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/stokes_shift.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/zufoxaxevofoxurosusileno.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/56096991692.pdf
    • https://cdn.shopify.com/s/files/1/0431/4329/9232/files/81754922640.pdf
    • https://cdn.shopify.com/s/files/1/0437/7228/0981/files/2078025708.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/11241983709.pdf
    • https://cdn.shopify.com/s/files/1/0439/3802/1544/files/xujikuxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dilos.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/
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000788b.bin
d4818b72ff5cda525a7a11551ae6e2f3403b8a61fc2e9be4c3ea3abb2d79ffe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x788B 5240 bytes
font_01_sfnt_off00008a6d.bin
596e2b03fecb65490abd950f18aedc042e37fbbc1e26eb87850842ac3683de5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A6D 10300 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.