Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c4eae4c1465f925…

MALICIOUS

PDF

45.6 KB Created: 2020-08-09 08:27:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2b0d069876e3243893b93cd27ed3bed SHA-1: ee3d015c84ba5409f90a5adfc97727a5f05fa7b3 SHA-256: 4c4eae4c1465f925f03588618a9c2ba61525a1e4c31707dff45a6d6571e021e1
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirect link to 'ttraff.com', which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to 'bifacial solar panels pdf' and numerous links to shopify.com domains, suggesting a link farm or SEO poisoning tactic to disguise the malicious redirect. The ML classifier also strongly indicated maliciousness.

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=bifacial+solar+panels+pdf In PDF document text
    • http://files.ccnaacademy.com.au/uploads/1/3/0/7/130739996/77c436.pdfIn PDF document text
    • http://sotojori.sophisticatedpress.com/uploads/1/3/2/6/132695615/lorurumosori.pdfIn PDF document text
    • http://files.killjoy.info/uploads/1/3/2/8/132816158/444fa6d86d0810f.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/1/0449/6493/7896/files/dnd_5e_combat_actions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/zulupusofowupogaxudakunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7741/8651/files/56778952775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0810/files/33806995924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/pudig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/14683943085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0506/6907/files/79979968868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7500/9686/files/plural_form_of_radius.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1846/7997/files/sejajakuloxojaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/48366365197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8507/8434/files/19561998360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/56383559340.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_off00007429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7429 5200 bytes
SHA-256: acc3a1be29e0f6ad4c1d40038b4977a544c970ba6cd7c82737ee894d6873b217
font_01_sfnt_off000085e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E6 10532 bytes
SHA-256: dc04369324b19821808e2d5e6738ca73cde1798adfb63fc04ec3bfaf6e0b3537

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