Malicious PDF — malware analysis report

Static analysis result for SHA-256 1905997a5f5ba679…

MALICIOUS

PDF

60.1 KB Created: 2020-08-21 22:15:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79b3933898fb01039426f661e4435f8b SHA-1: c38b88a592e6e105bc175f06783c3a215a723270 SHA-256: 1905997a5f5ba679fceb6271e585cb120b70abaae87464a4e683ade9d34e0c5f
230 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains a malicious redirector link pointing to 'ttraff.cc', which is flagged as malicious. It also exhibits characteristics of a payment redirection lure and includes urgency language, suggesting a phishing or scam attempt. The presence of numerous external PDF links, some pointing to benign Shopify domains and others to unknown domains, indicates a link farm strategy. No scripts were extracted, but the primary attack vector appears to be a malicious URL embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 8

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=baroda+pioneer+mutual+fund+redemption+form
    • http://nirufazib.marktobin.com/uploads/1/3/0/8/130814070/5565218.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/8513/6021/files/52989916905.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/wewabipunakizuf.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/super_mario_bros_xbox_360.pdf
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/16506608841.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68513135127.pdf
    • https://cdn.shopify.com/s/files/1/0437/1002/1787/files/93669238522.pdf
    • https://cdn.shopify.com/s/files/1/0438/4666/4349/files/juluv.pdf
    • https://cdn.shopify.com/s/files/1/0434/1966/4541/files/32349100680.pdf
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/49089981555.pdf
    • https://cdn.shopify.com/s/files/1/0430/4797/7114/files/introduction_to_nonparametric_statistical_methods.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_off0000a02c.bin
0ec0ac8f6decc5387d9c0974c7e8daabcdb094055c7b5e795f4964d67345b7db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA02C 4940 bytes
font_01_sfnt_off0000b0d8.bin
518fd845025809081bbd70eacbab58321b6c7411be0b8afbc9eb54ca7cb50ba0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0D8 10640 bytes
font_02_sfnt_off0000d535.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD535 4324 bytes

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