Malicious PDF — malware analysis report

Static analysis result for SHA-256 afd6982ed404d54c…

MALICIOUS

PDF

40.8 KB Created: 2020-08-06 15:03:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a8d75ac9736e9ebb0278fb10b45453bb SHA-1: 40a27f00b4670ca0db1a957da55aee4d6a74c4da SHA-256: afd6982ed404d54c187aa3fc422d205bd95bc288966f8b61d07e9264086f0c7c
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is designed to obscure the final destination. The document body, though partially corrupted, contains text related to 'foreign literature about absenteeism in the philippines pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.

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=foreign+literature+about+absenteeism+in+the+philippines+pdf In PDF document text
    • http://files.makeupbytessmiller.com/uploads/1/3/1/6/131606260/wevolitunewu-vujilunenisorix.pdfIn PDF document text
    • http://zujalibur.davidyek.com/uploads/1/3/1/6/131606552/3090840.pdfIn PDF document text
    • http://files.qaradaki.com/uploads/1/3/1/1/131164236/266f0a8.pdfIn PDF document text
    • http://files.newrevelationchurchil.org/uploads/1/3/2/8/132814674/kudalijobulepakavoj.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/1/0431/8081/8581/files/liwarodojon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/anteproyecto_de_investigacion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/php_line_break.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/dizenebekukigenitabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3035/5866/files/96648766206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2173/6859/files/xuwimepopodowig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7840/1700/files/78610789378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/8744991134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/57590292736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/34993152360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/ludoribojananepuwowipol.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_off00005331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5331 5432 bytes
SHA-256: ca21cdbf6b10fef7901e34b1421a8e57515c95c97ec58386cc750966f77d0f61
font_01_sfnt_off00006576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6576 10064 bytes
SHA-256: 68e87422791da696ee4d1f540591aa7a3473cb2e93df194411962464b2c78cf1
font_02_sfnt_off000087d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87D3 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3