Malicious PDF — malware analysis report

Static analysis result for SHA-256 f872a7a6aa2ae5c0…

MALICIOUS

PDF

39.1 KB Created: 2020-09-10 04:44:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3fa44ea4efa6b2444e6d4f1e688befe9 SHA-1: 569c29880c3bdfad79350a9174cde83010b332e4 SHA-256: f872a7a6aa2ae5c0663710742ac63195a480d34e5db28cb451d8099c1d4495d7
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/wix?keyword=chore+schedule+template+excel', which is likely intended to trick the user into downloading a malicious payload. The presence of a 'download button' heuristic further supports this social engineering tactic. The file is generated by wkhtmltopdf, suggesting it may be part of a larger SEO-based spam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/wix?keyword=chore+schedule+template+excel In PDF document text
    • http://zezikuna.janetmariesola.com/uploads/1/3/0/7/130775388/a65db.pdfIn PDF document text
    • http://logul.boostfitness.co.uk/uploads/1/3/0/7/130775309/6537297.pdfIn PDF document text
    • http://files.guyinspired.com/uploads/1/3/1/8/131872055/3913298.pdfIn PDF document text
    • http://files.shenyle.biz/uploads/1/3/0/7/130740391/mupoloxu-gevoveli-dorozu-ropifeso.pdfIn PDF document text
    • http://gowiji.ulrichhoeche.com/uploads/1/3/0/9/130969634/2890235.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/851c7c_d210f1f9b5d846808f2f14db69137e7f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ba3095_7dd694157e0e412ca7cd6fcc8a3d3a38.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/136d3d_55d378993bff4c5b907a4d2d8f38f6fc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c618e9_5276d687ce3942fcad73572e1821903f.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/6819/7781/files/rizetawipefubixeroduwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/etiologia_del_cancer_de_piel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3097/7431/files/xarakudikitenopaxatinuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6051/9066/files/pinamutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9809/6284/files/44323632001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/80457100026.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_off00005c1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1E 5284 bytes
SHA-256: 9974a5450be023940f9c0fe9e326041ac7bbf612f3c2447f5d0a82da690731bd
font_01_sfnt_off00006de5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE5 9916 bytes
SHA-256: e6414882e1829e90e1915ca33986abbcccfca495097d81f8d80474ab3dfb389c

Open this report in the interactive analyzer, or submit your own file for analysis.