Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8d2170a51f47782…

MALICIOUS

PDF

38.1 KB Created: 2020-08-19 22:29:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9851968c100312b1a9e672c9b75a4d70 SHA-1: 77084b0d15d4e950600ae1a7534c208e29c5e144 SHA-256: d8d2170a51f477826652d549cdc3bdae2aa00f8f6ad31210d3c096d257c68db4
202 Risk Score

Malware Insights

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

The PDF document contains embedded links, one of which, 'https://ttraff.com/pify?keyword=customs+declaration+form+for+shipping+to+canada', is identified as a malicious redirector. The document body text, though partially corrupted, suggests a lure related to customs declarations, aligning with the SE_INVOICE_LURE heuristic. The presence of a link farm further indicates malicious intent to distribute harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=customs+declaration+form+for+shipping+to+canada In PDF document text
    • http://files.glamorgananimalclinic.com/uploads/1/3/0/7/130776619/9186309.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/1/0433/7169/2188/files/texas_cdl_handbook_audio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8060/6111/files/taquicardia_ventricular_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4809/0270/files/microsoft_visio_2007_free_download_full_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8588/1759/files/anatomi_fisiologi_hernia_inguinalis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/john_deere_155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1282/2939/files/bemazisasaxotesidigozij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2134/2619/files/6653343291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6894/7616/files/nexidari.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 2

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_off0000575c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x575C 5476 bytes
SHA-256: cffa4b5fef130b1766ffac32b4c97be9d2dc85985711563d4a3e904e635f0020
font_01_sfnt_off000069cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69CF 10016 bytes
SHA-256: f98ee132048079abaf9d6869be316a9a7b235f37c3b0e14619a9d633a48a53cc

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