Malicious PDF — malware analysis report

Static analysis result for SHA-256 678f72fd8f02e318…

MALICIOUS

PDF

88.6 KB Created: 2020-08-16 19:19:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 503d5b7682bdbad7418b02162c78dc9e SHA-1: 1e7c07c19f598e56953a5f3a64b4113b322300e9 SHA-256: 678f72fd8f02e31853544571b97db44c7561eff8670a34695aef0e227710ef32
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link to a known malicious redirector, disguised as a map of Alexandria, VA. The document also exhibits characteristics of an advance-fee scam, suggesting a fraudulent intent. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content or engage in SEO manipulation.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/pify?keyword=alexandria+va+map+pdf
    • http://pafodak.balancedbodysolutionsok.com/uploads/1/3/0/7/130775432/75385843d0b9323.pdf
    • http://files.thiscloselittlefamily.com/uploads/1/3/1/4/131453333/perokafo_direpasu_bobakajixa.pdf
    • http://files.sportsplexlv.com/uploads/1/3/0/7/130775823/8159300.pdf
    • http://files.phoenixhypnobirthing.com/uploads/1/3/1/6/131606687/2736204.pdf
    • http://files.hitashardaslife.com/uploads/1/3/2/3/132303020/6039035.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/mefabowamepe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5280/1943/files/xutonimetezetu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3600/6817/files/22129997385.pdf
    • https://cdn.shopify.com/s/files/1/0430/4440/5397/files/54702033326.pdf
    • https://cdn.shopify.com/s/files/1/0434/9535/8624/files/alcohol_metabolism.pdf
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/dijamiririlowi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/wobiviluxosezikup.pdf
    • https://cdn.shopify.com/s/files/1/0437/6789/0069/files/79453654410.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_off00011d1d.bin
8a254a788acdcea3f859f85aa59159dff452d02f5e1b5c0d3f02d83e643cb0d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D1D 5124 bytes
font_01_sfnt_off00012e7d.bin
9dc54f036a970ea68b67765a0077f751bb226eba1490146efd7385357f68b2cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E7D 11072 bytes

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