Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbba60c5505ec455…

MALICIOUS

PDF

78.8 KB Created: 2020-07-23 12:47:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67d3141d2d9993f151d181f9ac47e0e1 SHA-1: bbfb1e9d6c4ef61dd501af192bc598e02ffc6732 SHA-256: dbba60c5505ec455e99325cbb86345bac30b00bd287402e6e3dcdc8048472476
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, suggests a lure related to 'healthy relationships worksheets pdf' to mask the malicious redirector. The presence of a large number of external PDF links further supports the classification as a link farm, likely used for SEO poisoning or to distribute malicious content.

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=healthy+relationships+worksheets+pdf In PDF document text
    • http://files.ladymaeimpressions.com/uploads/1/3/1/3/131379434/ba398.pdfIn PDF document text
    • http://files.kcliu.net/uploads/1/3/1/3/131381542/zevedeti.pdfIn PDF document text
    • http://files.creaturesgrimm.com/uploads/1/3/0/7/130775490/gawuzifipotazijel.pdfIn PDF document text
    • http://files.timmesserconstruction.com/uploads/1/3/0/8/130813514/393596.pdfIn PDF document text
    • http://files.thebotanyscholar.com/uploads/1/3/0/7/130775471/3919608.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/1/0431/1311/9905/files/68862498424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8203/1007/files/vejijugupeduboga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9889/8592/files/witofazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7218/3703/files/82072419959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4640/2198/files/mobabezumije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niwaragevutaxesidep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2625/0917/files/xepetavuxexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2402/2677/files/karenarajaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5606/2876/files/tinupuxolegimesum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/78735348344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3004/5084/files/73392135251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7505/8329/files/jijulurun.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_off0000f6d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D4 5136 bytes
SHA-256: 2180408922adf670992aa36988da736f72ac474683c606458d64b9e278d5d93d
font_01_sfnt_off00010853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10853 11028 bytes
SHA-256: 9bd6be5249092841c4ad34136465ccb3b35a06f3dc99c6033d51aa1ee3addd87

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