Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f2e313aadf998a8…

MALICIOUS

PDF

54.6 KB Created: 2020-08-25 15:55:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e6f621e804812b23d09ca0d1086da329 SHA-1: 7360523e326c5864aee3c2999116016297793e24 SHA-256: 8f2e313aadf998a8911a37d25bba5dfff8bf599e1a82031e0ad579fb3dca07ca
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including one pointing to a known malicious redirector (ttraff.com) that is also used in an SEO link farm. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify links, suggesting a phishing or scam attempt disguised as a free download. The ML classifier strongly supports the malicious nature of this PDF.

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=cambridge+ielts+8+reading+test+5+answers In PDF document text
    • http://burar.brushlove.ca/uploads/1/3/1/3/131398252/a1449382fdf3d.pdfIn PDF document text
    • http://rilusa.aahsanguilla.com/uploads/1/3/1/4/131407592/8354997.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8368/5274/files/bofotop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3092/9827/files/pawuzumuwojumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/yahoo_email_client.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5366/2883/files/lavideromabefuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3164/1762/files/31231908082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3384/6183/files/penaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6329/5650/files/baghban_movie_title_song_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/powobojiloxojudewelupiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1197/3799/files/video_editing_android_no_watermark.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5415/3371/files/internationalization_of_philippine_higher_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5529/2322/files/bill_of_sale_ga_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/fezunanamuruxavalopulan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8909/0977/files/43849101973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0084/5720/files/97052772029.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 6

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_off00009702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9702 5600 bytes
SHA-256: 44574b35f8252bba652864f2b3650fa94f075c130d5847d7d4168acb1ec4643a
font_01_sfnt_off0000aa07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA07 10292 bytes
SHA-256: afadb5966e02fb5f4e3fb158bd45f9016153b67472b775de6cdbee8e8cfc5229

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