Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd1536c3609b10d3…

MALICIOUS

PDF

41.3 KB Created: 2020-08-24 05:43:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31c06c8282521c94c5a4bd8697aa7619 SHA-1: ac65dac031da95bcecfd68a4d4f46f2605368105 SHA-256: cd1536c3609b10d32143649d59afc0d5c0af9e91be5922a8c586d8b5a944a304
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=ironing+cotton+sheets'. Another critical heuristic identified a PDF link farm, with many links pointing to shopify.com domains. The ML classifier strongly indicated maliciousness. The document body, though partially corrupted, contains the same redirector URL, suggesting a lure for phishing or a scam. No scripts were extracted from this sample.

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=ironing+cotton+sheets In PDF document text
    • http://files.nearnorthtr.com/uploads/1/3/0/8/130814118/2569119.pdfIn PDF document text
    • http://vukobosuf.saltandlightmin.org/uploads/1/3/1/6/131636725/pelekak_towitekowuzu.pdfIn PDF document text
    • http://files.samikahn.com/uploads/1/3/1/3/131398507/lalowadav.pdfIn PDF document text
    • http://files.allamericancargo.com/uploads/1/3/0/9/130969459/gitadizute.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/1/0428/3708/2271/files/95453663058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4900/0864/files/2950653123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0565/4678/files/molagijudipevuvefalaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/konakamadatusodefogigazez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5610/2565/files/kilopolezelaruxut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/42131420014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6387/7537/files/loxilotojizutudasedijuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6910/3528/files/iggy_pop_candy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1097/3083/files/nonuwakizidego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5623/3638/files/baldur_s_gate_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60359225188.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 8

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_off00006713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6713 4756 bytes
SHA-256: e4f5a2b12656b0d68866290d0216849453b0a8d5cf8e99475dc47444b8ce4cbd
font_01_sfnt_off0000773b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x773B 9780 bytes
SHA-256: a00e3920900fc965a550db73050e2777ef126bb22ad34ae83ae0299bf939926a

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