Malicious PDF — malware analysis report

Static analysis result for SHA-256 53a4c7cfc7a08ee7…

MALICIOUS

PDF

39.7 KB Created: 2020-08-24 00:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 247225ae2f9df1a4a61ad686389e4c83 SHA-1: 4556c14b97c779d80c631a7a5ffd0571d732c24e SHA-256: 53a4c7cfc7a08ee77b9d338954ed1db9164f37bf9a956e17ce8e0530bdea466c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, one of which, https://ttraff.com/pify?keyword=3d+photoshop+cs6+software, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to '3d photoshop cs6 software' and 'wkhtmltopdf', suggesting a lure for software downloads. The presence of numerous other PDF links, many hosted on external domains, indicates a link farm designed to obscure the malicious destination. The ML classifier strongly flagged this PDF as malicious.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=3d+photoshop+cs6+software In PDF document text
    • http://kajem.wpnpower.org/uploads/1/3/1/0/131070374/mowijevetirog.pdfIn PDF document text
    • http://files.cchscrew.com/uploads/1/3/2/8/132815367/wudidid.pdfIn PDF document text
    • http://files.ourvillagefarmacy.com/uploads/1/3/2/6/132695629/kedukuvojowezo.pdfIn PDF document text
    • http://files.kellymarhaugojalvo.com/uploads/1/3/1/0/131069934/df8d31fb67.pdfIn PDF document text
    • http://fijedep.parkviewtheatre.com/uploads/1/3/2/7/132740494/7988837.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4319/0946/files/bible_commentary_audio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1802/5122/files/fire_genasi_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0660/7005/files/wanuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3678/7356/files/nigujamojiluzixid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7353/5142/files/ligafobunoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/refuvapekafugarepabuzawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/97166709967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5960/9753/files/check_point_endpoint_security_vpn_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/jutijulozajateviwumifet.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D05 5528 bytes
SHA-256: 7cbf157ee43ce823452c36a945599b6be59261eed0ef44c15ff2b4cac03e4532
font_01_sfnt_off00006fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD6 10144 bytes
SHA-256: a42006a2d0e2436d425aee7d30f6e28445a12f98cc626e3b18a1e9e24f02137f

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