Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c2ce2dd73f97245…

MALICIOUS

PDF

48.1 KB Created: 2020-08-06 18:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a22585d24f82cf06059c96fc8f332bee SHA-1: 44a5eb7f73f9e78593bcde09099f3e05078b7724 SHA-256: 5c2ce2dd73f97245ed6f7c56e34b1a350ad4c6b1a6c7223454f838c297b66008
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, with one identified as a malicious redirector. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates a social engineering tactic involving fake prizes or parcel deliveries to trick users. The ML classifier also flagged this PDF with high confidence, supporting the malicious nature of the document.

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.cc/pify?keyword=anodea+judith+pdf
    • http://files.ipimages.com/uploads/1/3/2/7/132710732/tidesojez_ranosab_xubixo_vipuxejin.pdf
    • http://files.interporcspain.org/uploads/1/3/1/0/131070774/sibeterononela-xogozijedukul.pdf
    • http://files.swofcp.com/uploads/1/3/1/1/131164462/zawujed.pdf
    • http://files.widebaydancesupplies.net/uploads/1/3/1/3/131398308/tutupogomimuv-katofopubo-ligowaw.pdf
    • http://files.matriarchevents.com/uploads/1/3/2/8/132814302/xagimi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8331/6891/files/genuwunogadi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3192/files/2016_public_holidays_usa.pdf
    • https://cdn.shopify.com/s/files/1/0439/9444/8030/files/filariasis_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/tulipizogoduvubesozadabex.pdf
    • https://cdn.shopify.com/s/files/1/0432/1761/7057/files/87086510022.pdf
    • https://cdn.shopify.com/s/files/1/0436/7322/3321/files/48202812620.pdf
    • https://cdn.shopify.com/s/files/1/0434/5954/3192/files/ejercicios_de_nmeros_primos_y_compuestos.pdf
    • https://cdn.shopify.com/s/files/1/0432/3206/7748/files/xaginuxivuluwoguxekexusib.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/rexizena.pdf
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/81783182631.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/33444693206.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.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_off000072c9.bin
9074ad8c3f042dbfe0ab2a473c15991e22a8ae7d865bd9082ef89ee15303fb97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C9 4888 bytes
font_01_sfnt_off00008375.bin
1b48334847c88b15c96c9ab6a263ae1310f2f21c51d6577ceadf7e631c37aa8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8375 15376 bytes

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