Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbdc1239ef1b19b9…

MALICIOUS

PDF

41.0 KB Created: 2020-08-21 13:42:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 436b652a640e859757d95c5bc0248aea SHA-1: f9ca27b3be7a3bce943b157a575380e4bf79d759 SHA-256: cbdc1239ef1b19b926dbed13ba6c143d942f8e253f2ddd3f0ce0c3994adde957
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a primary URL pointing to a known malicious redirector. The document body, though partially corrupted, includes the target URL and references medical treatment guidelines, suggesting a lure to disguise malicious intent. The primary malicious URL is https://ttraff.com/pify?keyword=medial+meniscus+tear+treatment+guidelines, which redirects to other benign-looking PDFs hosted on Shopify. The presence of multiple embedded links and the redirector indicate a phishing or scam attempt.

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=medial+meniscus+tear+treatment+guidelines In PDF document text
    • http://files.ppscgc.com/uploads/1/3/0/9/130969655/7a74b25.pdfIn PDF document text
    • http://files.mountainmodelaires.org/uploads/1/3/1/8/131871569/faduwobup.pdfIn PDF document text
    • http://files.lindseymhottin.com/uploads/1/3/2/7/132712011/62ae72bebc7320.pdfIn PDF document text
    • http://files.mtbachelorstash.com/uploads/1/3/0/8/130874526/8431533.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/1/0429/9977/5381/files/pulanifusedowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9315/5237/files/319797966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/5419/7910/files/fadurexeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/9313/6294/files/jellicle_cats_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4666/4349/files/architectural_drawing_course_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2230/0822/files/adventure_capitalist_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1379/8050/files/2877401417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7656/4630/files/95966554068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5825/files/44255129836.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 3

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_off0000619a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619A 5264 bytes
SHA-256: ef3cdae564a5278d742d4cce5df54f3c7bf00df190c4c4dd28a9282ab834c93d
font_01_sfnt_off00007364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7364 10468 bytes
SHA-256: 36e2e0be95ccf04a82f14f84c91ffc33c0d006b74ad9069a2e0506a22689b733

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