Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9a03f27e4d01aa…

MALICIOUS

PDF

42.4 KB Created: 2020-08-14 18:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 46cc8a24ae136a58e010381423d1281a SHA-1: 4c5af665cc4d847c0601dad3c96e221a77be5a29 SHA-256: fa9a03f27e4d01aa9bc5de2a1d6da57b6da8b50aa3d7ec914e0e92606654bf86
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or to obscure the true malicious destination. One critical heuristic identified a direct link to a known malicious redirector at `https://ttraff.com/pify?keyword=coplanar+waveguide+electric+field+distribution`. The document body, though heavily obfuscated, contains this same URL, indicating the primary intent is to redirect the user to this malicious site.

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=coplanar+waveguide+electric+field+distribution In PDF document text
    • http://files.mentorsmatter.us/uploads/1/3/1/1/131164479/f8f738384.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/1/0427/6633/6166/files/98798792840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/zofabanedero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6674/4216/files/11539609114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3478/files/5607818128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9159/0308/files/vixajogana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/20785939196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/26673355808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0213/4681/files/pm_gramin_awas_yojana_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9196/7646/files/probability_and_statistical_inference_hogg_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/31724632330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/81343797537.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_off000067ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AC 5520 bytes
SHA-256: 95ff63e05c01893c88a1b09522399d940c2fa94d3f11698390310a916ac08bcc
font_01_sfnt_off00007a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A90 10044 bytes
SHA-256: 34dbde41d1e3b6ca687162ecad369761467bd8e57716cb086d38642ab268c200

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