Malicious PDF — malware analysis report

Static analysis result for SHA-256 a77de20c89399db1…

MALICIOUS

PDF

43.6 KB Created: 2020-08-14 01:00:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7356ab58a552c1d641f8857fd41a780 SHA-1: 4344cba4d6b3976967123d10dc48d13af934f53f SHA-256: a77de20c89399db1a057646c21a5c243e46e845e630d10d39762966fdd9ff281
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body contains the question 'Can you use itunes on android' and the malicious URL, indicating a social engineering lure to drive traffic to malicious infrastructure.

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=can+you+use+itunes+on+android In PDF document text
    • http://files.unbndglobal.org/uploads/1/3/0/9/130969505/rajijizipawuzezok.pdfIn PDF document text
    • http://files.southphiladelphia-locksmith.com/uploads/1/3/0/8/130874286/9642532.pdfIn PDF document text
    • http://befukola.iamcnola.org/uploads/1/3/0/8/130874276/2897580.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/1/0440/6591/5045/files/witenapezinoguweb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1229/5589/files/modern_hindu_baby_boy_names.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1299/2674/files/atlas_anatomy_book_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nifafujejugafux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7482/2043/files/pure_mathematics_algebra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7945/1289/files/50612194631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/cengel_thermodynamics_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4156/8421/files/1001_albums_you_must_hear_before_you_die_mega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/lafiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2175/2726/files/51662179820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1878/7736/files/bruegger_s_nutrition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6237/8152/files/sulupolepojenuliravanig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3929/2577/files/98821550528.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 5

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_off00006efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFC 4796 bytes
SHA-256: 2c49ce19887e2a9378f1935dd4ab4164441e7e4ecc50fe79ae024fff917a4c67
font_01_sfnt_off00007f5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5F 10052 bytes
SHA-256: 20384716d815025a35ddddc87cdc9990300fe9dde648fbe01d29466e78840163

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