Malicious PDF — malware analysis report

Static analysis result for SHA-256 44b7bade31a3268a…

MALICIOUS

PDF

39.0 KB Created: 2020-08-20 04:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f30411cdc2e23929af413d4163cf5493 SHA-1: 441bafb604ad03fc92bc869d342fa159e6b63a2e SHA-256: 44b7bade31a3268aa3b65d66a24fd7f79e60b0efca961b156785268a7aae60d0
194 Risk Score

Malware Insights

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

The PDF contains a link disguised as a free printable divider tabs template, which redirects to a malicious URL. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the primary redirector. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the document's structure and embedded links point to a phishing or redirection attack.

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.ru/pify?keyword=printable+divider+tabs+template+free In PDF document text
    • http://files.rebelliousrheaboutique.shop/uploads/1/3/1/4/131406413/2090860.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/1/0437/4442/8181/files/46858518685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/48255026028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/tunididoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0873/6928/files/xanewefubedufekubomax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8638/1207/files/htaccess_redirect_url.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/98949172165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/78698681569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/resume_format_for_accountant_assistant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6289/4485/files/66048743130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5104/1447/files/figuwelofoxufin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/12489660146.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_off00005a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A47 5388 bytes
SHA-256: 7ccec02f7db3d59c7e3b331562e928d3cb5d691eff36ef34e3e72a7e6b969a25
font_01_sfnt_off00006c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7D 10140 bytes
SHA-256: b7ccbcfeb795a6ce4f42688cefd8465471e130aa8d8034beaed1614b02dc9664

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