Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a352f623835c72d…

MALICIOUS

PDF

43.8 KB Created: 2020-09-16 16:29:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02d506d223aea8be748d9ff182fad5fb SHA-1: 3489d90a3ac53d6f1534203e94d7f9b0781a2be8 SHA-256: 0a352f623835c72da697499b7092a4ca9d3a6c71f331835e38e4804c8810db54
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting an SEO poisoning or link farm strategy. One prominent URL, 'https://ttraff.ru/wix?keyword=new+jersey+marathon+2020+cancelled', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and references to a cancelled marathon, likely serving as a lure to attract clicks to the malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.ru/wix?keyword=new+jersey+marathon+2020+cancelled
    • http://files.nataliekimballfitness.com/uploads/1/3/2/7/132740277/linuzakazusojowire.pdf
    • http://files.butteswcd.org/uploads/1/3/1/8/131856032/safujubibuvobep.pdf
    • http://guxaxeb.maestrodonappert.com/uploads/1/3/2/3/132303354/kajakozokezan.pdf
    • http://files.bethanystahl.com/uploads/1/3/1/6/131606349/72cb0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/jofuwekida.pdf
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/lesinufe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1120/1435/files/39378939077.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lovukapovilelogitolosir.pdf
    • https://cdn.shopify.com/s/files/1/0463/4791/1329/files/tuxunafesedobab.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9816/files/namupemovonam.pdf
    • https://cdn.shopify.com/s/files/1/0430/3893/3146/files/retained_earnings_calculation_from_balance_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0439/9969/0910/files/xogupum.pdf
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/number_properties_gmat_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/revajezo.pdf
    • https://cdn.shopify.com/s/files/1/0483/0429/2002/files/hot_wheels_sizzlers_cars.pdf
    • https://cdn.shopify.com/s/files/1/0439/4863/8363/files/types_of_adaptation_in_animals_pdf.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aae.bin
e8d788d01fdd755134f25740572625c886717e5c32b6c6b3c51f304d25715cf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAE 5692 bytes
font_01_sfnt_off00007e00.bin
290a655d5ed688db26d6a916d9852e993f40229984e5f3536ef14689dd1c5e69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E00 10604 bytes

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