Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e376f9311b16d1…

MALICIOUS

PDF

41.0 KB Created: 2020-08-11 14:48:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1d851ead59b3d6b7251eddba032c5b6 SHA-1: b74670041a5496f89fe8f02fac043c6a87635754 SHA-256: 60e376f9311b16d1bb3c43d86131d3a2d79a5a0e9f144d8cc360c3776a60d098
182 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to malicious infrastructure, disguised as a health insurance brochure. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the primary malicious URL, suggesting the intent is to redirect users to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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
  • 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=aditya+birla+health+insurance+platinum+plan+brochure+pdf
    • http://files.mnglandscaping.com/uploads/1/3/1/8/131871992/8886265d.pdf
    • http://waguxuzaj.2ndusss.com/uploads/1/3/1/4/131452883/7406309.pdf
    • http://files.dulichsapalaocai.com/uploads/1/3/1/4/131437123/9660110.pdf
    • http://files.wheaten.se/uploads/1/3/1/1/131163736/loxemu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/bofebom.pdf
    • https://cdn.shopify.com/s/files/1/0437/6992/1690/files/46206972336.pdf
    • https://cdn.shopify.com/s/files/1/0431/4418/3970/files/42308758769.pdf
    • https://cdn.shopify.com/s/files/1/0435/9634/9602/files/43505681586.pdf
    • https://cdn.shopify.com/s/files/1/0430/7245/4810/files/ralugemilazemo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7486/3772/files/c_major_chord_progression_piano.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3625/files/86298215630.pdf
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/66571393948.pdf
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/diablo_2_cd_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/pumidera.pdf
    • https://cdn.shopify.com/s/files/1/0430/8926/4794/files/90343565470.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_off00006100.bin
d9ebe8d0a958fa35b81ade355efc9dcb1c07dff0c29d006105cf95cb4c163e79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6100 5628 bytes
font_01_sfnt_off000073ef.bin
3179fb792902c8b8f64fcd1e8a0fe9efff6a36dc17231abfa4c66c07d9832ee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73EF 10376 bytes

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