Malicious PDF — malware analysis report

Static analysis result for SHA-256 aec67720a31a24f0…

MALICIOUS

PDF

38.4 KB Created: 2020-08-17 03:41:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 72006190b2cbd9117466b7b2f12009f8 SHA-1: 4da9a4540a16a625a654b503f081b66bb65b43e9 SHA-256: aec67720a31a24f08634ef3795f8e95e656baf880ec4e5e12183a5a91dcfd815
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=digestive+system+quiz+pdf', suggesting a lure to a quiz to mask malicious redirection. No scripts were extracted from this sample.

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=digestive+system+quiz+pdf In PDF document text
    • http://dotes.sophiageorge.com/uploads/1/3/1/3/131380005/tikafizefusin_seter_fupamagef.pdfIn PDF document text
    • http://files.dsanorthstar.org/uploads/1/3/1/3/131398268/8246461.pdfIn PDF document text
    • http://files.puzzle-pieces.org/uploads/1/3/1/4/131438059/9171715.pdfIn PDF document text
    • http://files.karibbeankinks.shop/uploads/1/3/1/0/131070674/7535185.pdfIn PDF document text
    • http://files.mrjopp.com/uploads/1/3/1/4/131438299/mojotelujavap_kawimiwiwalufa_ripejur.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/1/0434/4204/5090/files/jalotabinofasuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5292/8919/files/capsicum_annuum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4777/9478/files/xujiwazawivugiwabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/feruzikinifemitivoteg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7994/9718/files/nimanoremadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5202/2430/files/jedepopinakipoxox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2936/3878/files/ano_ang_kahulugan_ng_wika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/jaraxegov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1725/4558/files/nigedelibaxelirexotuweb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8468/3166/files/dizapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/tosurirapiwidufilapexo.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_off00004c04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C04 5024 bytes
SHA-256: 0895f33588a8eac556ffe38e46ff17f6e49bc92efcecf7c4b96be8b96f513e4d
font_01_sfnt_off00005d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3E 9784 bytes
SHA-256: d235cc07cde4a08df0774853fd50da3bcbfcc92602ec619c13bfa7d24f16377b
font_02_sfnt_off00007eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB6 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f