Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a5cee867e54648a…

MALICIOUS

PDF

43.5 KB Created: 2020-08-21 01:31:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aced920479bcfbffbc2182836ac67a79 SHA-1: 7eb1146fac7802faeae318744b03abb00a65f096 SHA-256: 1a5cee867e54648a13513828bb7b6678d995dd24e38f79d54c99a8874f461ca1
222 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a lure for a 'marksheet in excel file' and a call-to-action button. It embeds numerous links, including one to a known malicious redirector at `ttraff.com`. The document body also contains a callback lure, suggesting a potential tech-support scam or phishing attempt. The primary attack vector appears to be social engineering via a malicious link embedded within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=marksheet+in+excel+file In PDF document text
    • http://files.lcooperillustration.com/uploads/1/3/1/1/131164129/11937183d429b1a.pdfIn PDF document text
    • http://buguxa.coksmspirit.com/uploads/1/3/2/8/132814084/390838e3ab0.pdfIn PDF document text
    • http://files.hips.org/uploads/1/3/0/8/130874676/dodilogowetidunejok.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/1/0433/3040/4502/files/gebepuwimizadomemudafuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7978/5886/files/certificate_of_appreciation_for_employees_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4798/5053/files/treatment_of_heart_failure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4399/3238/files/66893150631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/66911219512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4319/1969/files/sawowila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/caterpillar_953_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9140/9562/files/vulemunozabawiwidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/mokuwiwuxelokuluresitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/twisted_treeline_rewards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4590/3781/files/xeretotadin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9952/9120/files/chart_full_international_phonetic_alphabet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/22382471954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/r_mysql_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/divina_commedia_inferno.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_off00006d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D56 5104 bytes
SHA-256: f65dd8332f0c713ab41ce1fa05d8caf0316107f7db2d4ae334a6f802ff3a7814
font_01_sfnt_off00007eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB6 10120 bytes
SHA-256: ead763123107227960bfed1a749e0d8357afaa8d89b8cbaef221ea04d2055a64

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