Malicious PDF — malware analysis report

Static analysis result for SHA-256 211f1cbdf757e726…

MALICIOUS

PDF

43.1 KB Created: 2020-08-22 17:56:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 04ef581f248678bb0cedd3b68eaa7dd7 SHA-1: 0fa3bc12189269abc0684406cf88c17ab1511a56 SHA-256: 211f1cbdf757e726a2f851e5e92b933bea49b6b16fa452d6da91ff7238bc4d85
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised with a lure for a game hack. This link points to 'ttraff.cc', a known malicious redirector. The document also functions as a link farm, with numerous embedded links to other PDFs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering through a deceptive link.

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.cc/pify?keyword=angry+birds+transformers+hack+android+1 In PDF document text
    • http://binetuso.middleschoollegion.org/uploads/1/3/0/7/130776330/0468368b70ec5.pdfIn PDF document text
    • http://files.jamielanesweets.com/uploads/1/3/1/8/131872055/218054294d54.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/1/0438/9414/5176/files/weather_report_chehalis_wa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/apple_inc_company_profile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4880/3227/files/cazadores_de_microbios_paul_de_kruif_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9208/0795/files/21392538823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7102/0954/files/gazigopozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8357/0083/files/13174515723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kefemomorevogik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6001/0912/files/36442503850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6819/4965/files/equivalent_fractions_worksheet_year_4.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 1

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_off000068ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68CE 5748 bytes
SHA-256: 2d944388c2885fbdd83ac9ea9ee44497a6c5be14a6c4c1614e74b68117d7ac89
font_01_sfnt_off00007c3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3E 10496 bytes
SHA-256: 9146be9d590881ea82d5273b32700fcbd2b264f5bae18112968ce9bf370ea030

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