Malicious PDF — malware analysis report

Static analysis result for SHA-256 aec0bc661212135a…

MALICIOUS

PDF

65.3 KB Created: 2020-08-08 13:30:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa56db128670530a2a8dcc991d58bcfe SHA-1: b0b6283d4a7f2e903de62445d77cc0710aeecf32 SHA-256: aec0bc661212135a7a81636c9d0ed219fdf878ff317ed6c9cd7d82f8088cd4ee
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains the same URL and a keyword related to pulse oximetry, suggesting a phishing or scam attempt. The presence of numerous external PDF links, many hosted on Shopify, further indicates a link farm or SEO manipulation tactic to distribute the malicious content.

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=pulse+oximetry+adalah+pdf In PDF document text
    • http://saludof.nbyrdhall.com/uploads/1/3/2/6/132681556/5439545.pdfIn PDF document text
    • http://files.tampareflexology.com/uploads/1/3/0/8/130874371/2865202.pdfIn PDF document text
    • http://files.motivelove.com/uploads/1/3/1/4/131408056/01a156e67720.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/1/0432/8721/6293/files/69236386462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/28028998713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4537/1549/files/xijukudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7077/5706/files/banobilabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/pidigagex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6145/8582/files/biliwamokolodowoviraxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/femupuzakavetivug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4958/0704/files/wowaderovujaxudukegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3279/5541/files/femilevinizogikogixox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8494/6333/files/fujoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7202/7814/files/96905108361.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b28f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB28F 5228 bytes
SHA-256: 87ce998a84e1a3335e34d599f67c6145480aa988117c6779efdcd9ea1f8432b3
font_01_sfnt_off0000c462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC462 11008 bytes
SHA-256: 22d241d6962c1c8c8e0de6c98c853d0ba688ab8d5cab14ce5c31b0917643145c
font_02_sfnt_off0000ea00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA00 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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