Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac3dbb2717a9f41f…

MALICIOUS

PDF

52.4 KB Created: 2020-08-19 22:16:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7636ea07082c063b78d62ddc7a77820 SHA-1: 36138d9e5d840f455b908f1d44cac4d40b5d3dd0 SHA-256: ac3dbb2717a9f41ffa31ffdb8ab8c19e9636effb707b95dc0c2db21d78e19feb
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=abolishing+performance+appraisals+pdf'. Another heuristic indicates a PDF link farm, suggesting an attempt to distribute malicious content or engage in SEO abuse. The ML classifier strongly supports the malicious verdict. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=abolishing+performance+appraisals+pdf', reinforcing the malicious intent.

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=abolishing+performance+appraisals+pdf In PDF document text
    • http://mutep.katelynnmills.com/uploads/1/3/1/3/131384169/podotumeke.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/1/0427/7541/2902/files/muxabudotopopimaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0281/4876/files/bevozitegejutivazujeruxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/sustainable_ecotourism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/guxixozoxaxutex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/bikorowimezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/91635432013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6558/1469/files/tifudisuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0047/0438/files/enlaces_quimicos_conclusion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/6222567093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/lefinozuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1662/6081/files/foucault_archaeology_of_knowledge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4315/8166/files/bexitozatakilawat.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
🗂 Part of campaign: swisscompleteeyecare.com 3 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8221 5404 bytes
SHA-256: 13c0562f18abf73d5c3e006fe68e8b23862c9bf95ae65a621369f2b98e0647ae
font_01_sfnt_off00009434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9434 10088 bytes
SHA-256: 4fa8c8a8139f4728a76f410d82ba3b008dcbd29da23200f82c71a90b20bef3b9
font_02_sfnt_off0000b68f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB68F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2