Malicious PDF — malware analysis report

Static analysis result for SHA-256 44199b78b25467af…

MALICIOUS

PDF

54.2 KB Created: 2020-08-12 13:37:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3182f58398be880d16d7ad45eeefbd22 SHA-1: ba1566c624f6c5526239cfd9a4bb3b021d5cb7bd SHA-256: 44199b78b25467afac8831c5b1146cb91cfd07feff70b9f3a2f1f2b4fe10bc54
194 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL. Additionally, numerous PDF links were found, suggesting a link farm or redirection strategy. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=performance+appraisal+system+pdf In PDF document text
    • http://files.vocations-sagesse.org/uploads/1/3/1/3/131380029/vavaguxuwuvi_juwakow_wopova_rikimanigikog.pdfIn PDF document text
    • http://files.annemariewalter.eu/uploads/1/3/1/3/131379540/zaber.pdfIn PDF document text
    • http://files.huntershealingcalls.com/uploads/1/3/1/0/131070718/tezisakudenev.pdfIn PDF document text
    • http://files.iapmdelhi.com/uploads/1/3/1/4/131437307/f4d6baa5017366.pdfIn PDF document text
    • http://nukofov.nejumpersassociation.com/uploads/1/3/0/7/130739385/wulege.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/1/0429/9777/6543/files/zifibiponisisuzavag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1564/3041/files/xifedelurariroruwanaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/123022630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/pewagitarerovite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9956/9832/files/87217953061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9289/2061/files/pawosakalut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9997/1999/files/murixib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7833/4117/files/54990772598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/pojefinuwololidexapopikon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/aquaponics_project_proposal.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_off00009623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9623 5404 bytes
SHA-256: 5f3cc62f4e77c9a64e64b005b9f84ce4b4b9b84575a18ae5e55638b8134c8721
font_01_sfnt_off0000a866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA866 10404 bytes
SHA-256: 3737a9b2c988309786bd8fefae0ef2da6e0067e838be90a7168b376d2dcab687

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