Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d2b7e0bb1ebd11c…

MALICIOUS

PDF

39.8 KB Created: 2020-08-10 16:50:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee7bc35a8a3f9a667d8e26edf3e0bd8a SHA-1: 0dfa36bd9c7a96500c1fe86a6f944b996aa73df0 SHA-256: 5d2b7e0bb1ebd11c0dd92a7d9104046f0f9d57fd6327b0b6858c819f90f5c245
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of an SEO link farm designed to lure users with promises of free textbooks. The primary redirector URL, https://ttraff.cc/pify?keyword=new+general+mathematics+textbook+for+ss2+pdf, is flagged as malicious. This suggests the document's purpose is to drive traffic to potentially malicious or phishing sites.

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=new+general+mathematics+textbook+for+ss2+pdf In PDF document text
    • http://files.hermadarmstadt.com/uploads/1/3/1/4/131408172/vozupitezefakaxaz.pdfIn PDF document text
    • http://files.super-sounds.com/uploads/1/3/1/4/131437984/poxoguw.pdfIn PDF document text
    • http://buwab.mshansmusic.com/uploads/1/3/2/7/132710712/ccc7f1cd441d3e6.pdfIn PDF document text
    • http://files.dibiasedimillo.com/uploads/1/3/1/3/131384635/funoguvor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/rexituzij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/12021666267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/98472900368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7485/5846/files/5058943876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50751207741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7850/8953/files/rajaradomebilijifaludub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6243/5745/files/electronique_numrique_bascules_exercice_corrige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5287/5424/files/mazuxutixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/ragumexarodupitubasawulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/15142627725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2351/6323/files/gogonewanaziwuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0985/9999/files/lutiruge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92904811518.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DE9 5824 bytes
SHA-256: 6f88d5c24bc07535ec56c67a1f7fd41056c0341d7d540f56b9971690ca93a72a
font_01_sfnt_off0000619e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619E 10076 bytes
SHA-256: a6e1ca1696cacdd87d54124dcb50ad8086fa041e10fac096788f75aee651c430
font_02_sfnt_off000083e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E0 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2