Malicious PDF — malware analysis report

Static analysis result for SHA-256 60763b924141c4a6…

MALICIOUS

PDF

43.8 KB Created: 2020-08-11 00:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e2c863d404ce1d3b6bb432ca01b0d3b SHA-1: 77165befb638b8f9bc3d362a4285809fa0e8dd4d SHA-256: 60763b924141c4a66c7eea215f43398e1424db84817d75eeb32ad907f74fd4dd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by a machine learning classifier and heuristic rules. It contains numerous links, many of which point to a redirector service (ttraff.com) that likely leads to malicious content, disguised as free PDF downloads. The document body itself contains garbled text and embedded URLs, reinforcing the lure for users to click on these links.

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=manual+de+biomagnetismo+medico+cleotilde+pineda+cabrera+pdf In PDF document text
    • http://files.kathrynbelle.com/uploads/1/3/1/8/131856331/3269062.pdfIn PDF document text
    • http://files.gemalchemist.com/uploads/1/3/0/8/130874633/sezepexifurisitalaz.pdfIn PDF document text
    • http://files.marycatherinestarr.com/uploads/1/3/0/7/130739856/9a9087e34cd.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/1/0444/5346/2183/files/alt_code_heart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8602/8708/files/functional_strength_training_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9003/5366/files/xifox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/83506812491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1460/files/dekotiregarigoxitubowogez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5121/9104/files/80828037491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9348/1885/files/apcob_notification_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2771/0630/files/bimuluzuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/wimilogekivonigiratotowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/nataki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3606/5438/files/vapiwowimokuvefigerudake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4724/7263/files/ampicillin_davis_drug_guide.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5217 5620 bytes
SHA-256: 8235b2cdd5126f8564ad28033ab6ef4f1c08aec6513230d824992c5ce4dcac91
font_01_sfnt_off00006510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6510 2456 bytes
SHA-256: 49658ea7931ca42d06af4dd913d5059062bb267ddb80db6ae48e0f7a9cf6e31a
font_02_sfnt_off00006fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA8 15396 bytes
SHA-256: 4274becaa28e8d469702a09933cd15acf72cbd2498875e5c6c7d1d6f536c5730

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