Malicious PDF — malware analysis report

Static analysis result for SHA-256 0413f9bd87b47be9…

MALICIOUS

PDF

75.9 KB Created: 2020-07-31 01:58:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b82e1a552ceba7520f9043b9fee9a4c SHA-1: 6a5d826086de9ba8d1be3dac78ed8bda8fc9f676 SHA-256: 0413f9bd87b47be9eae5c32e9196d33150d91dffabf15456f90339e73f59cab8
194 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to known malicious redirector infrastructure. Heuristics indicate the document is shaped as an advance-fee scam, likely a lottery or parcel delivery lure, designed to defraud the user. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm used to distribute the malicious content.

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=obligationenrecht+franz%25C3%25B6sisch+pdf
    • http://files.baseballforyouth.com/uploads/1/3/1/4/131410094/d01b94f17819.pdf
    • http://files.ptcolormarket.com/uploads/1/3/0/7/130739073/fulixemena_mobetaz.pdf
    • http://files.bereanwest.com/uploads/1/3/1/3/131383604/ravem.pdf
    • http://files.barbaraminorenamels.com/uploads/1/3/0/9/130969237/beposogixo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87960197539.pdf
    • https://cdn.shopify.com/s/files/1/0428/6955/5356/files/lepakosukasiledipedaguban.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71482320097.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/piligavepuzo.pdf
    • https://cdn.shopify.com/s/files/1/0439/1819/6891/files/zarexesamijivemakovo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/zubeli.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26160609228.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/fudedijixipamipofinexijiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/3400/7973/files/pidusozuledexame.pdf
    • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/pixajelaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/7504/2457/files/67581286215.pdf
    • https://cdn.shopify.com/s/files/1/0435/8258/7039/files/88305300997.pdf
    • https://cdn.shopify.com/s/files/1/0432/0008/6180/files/penanupa.pdf
    • https://cdn.shopify.com/s/files/1/0429/0877/8663/files/kimaj.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_off0000de04.bin
99e1e735c6b05c4ba94fc3c91004bdc2a0d8ea23f30cf9789c820744774a48bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE04 5560 bytes
font_01_sfnt_off0000f0a2.bin
89ebbf22809a936fd6ff0cb83206c488a81caea360f6271e4fb8134903deb502		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A2 15676 bytes

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