Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fbc194b1703a7a6…

MALICIOUS

PDF

42.3 KB Created: 2020-08-14 07:32:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5701effd296965627917475bd0f7173a SHA-1: b7f7d72a5a1caace7fdc187658ebdfb3bee4e6ee SHA-256: 0fbc194b1703a7a6a9a0cd8b6558bd855f0647810fc53c6ea5a053dc65c3813f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple embedded links, including one that redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains text related to background checks and credit reports, suggesting a phishing or scam lure. The presence of numerous external PDF links also indicates a link farm, likely for SEO manipulation or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=criminal+background+check+credit+report
    • http://files.blueoceanapparel.net/uploads/1/3/0/7/130776073/8907821.pdf
    • http://gutoze.amandagullattceramics.com/uploads/1/3/1/6/131607310/453242.pdf
    • http://geforot.corvetteslimited.com/uploads/1/3/0/7/130775506/tafarijal.pdf
    • http://files.sofafoundation.org/uploads/1/3/1/3/131384127/8503099.pdf
    • http://files.thriftradiateshappiness.com/uploads/1/3/2/6/132682124/601070.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/48146113461.pdf
    • https://cdn.shopify.com/s/files/1/0432/2269/6096/files/jozozuwewabok.pdf
    • https://cdn.shopify.com/s/files/1/0434/7753/2824/files/75488757887.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/43729337446.pdf
    • https://cdn.shopify.com/s/files/1/0436/5982/1209/files/bemajufatowizi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6807/0824/files/biochemistry_journal_articles_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/1995/2550/files/andersen_400_series_casement_windows.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niriliruvurufuwupaku.pdf
    • https://cdn.shopify.com/s/files/1/0429/0491/2031/files/rasixememoxifudabud.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1706/files/jegolirerafetulajad.pdf
    • https://cdn.shopify.com/s/files/1/0434/2841/3607/files/61257740394.pdf
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/99423490926.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_off00006722.bin
6b7b2417c75c3e245b8472d8105886b72ab7f89075863b6a2e3e904d1f747a61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6722 5420 bytes
font_01_sfnt_off00007950.bin
3e302e446d6261f4a1c73e396748e47c1e9ac108a4631f33be4c75ff5e746f99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7950 10080 bytes

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