Malicious PDF — malware analysis report

Static analysis result for SHA-256 994ac4755f138824…

MALICIOUS

PDF

36.0 KB Created: 2020-08-05 14:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96ff062bd52b8cd6a23b2c64888e779a SHA-1: d4530550fee32b94049fd03143c4753ee4ecabfa SHA-256: 994ac4755f138824dfcfac404545e9a5dd55db084b8b821bb5b360abf94372f3
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text related to 'punekar sc st act book pdf' and a URL pointing to a redirector. This suggests the document's primary purpose is to trick users into visiting the malicious URL, likely leading to further malware delivery or phishing.

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=punekar+sc+st+act+book+pdf In PDF document text
    • http://files.marcusgeorge.com/uploads/1/3/1/3/131380717/68d557b01fd.pdfIn PDF document text
    • http://files.anastasiaabrahim.com/uploads/1/3/1/0/131070737/eabeb0.pdfIn PDF document text
    • http://files.filmstillphotography.com/uploads/1/3/1/6/131606262/wawirabid_wokodavofod.pdfIn PDF document text
    • http://files.djannalog.com/uploads/1/3/2/8/132814342/9755804.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/1/0432/6660/5211/files/lakamepunobob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/50710348023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/lajuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8937/1040/files/96881376624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/xudil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4750/1474/files/basilsila_ta_azal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/91407736673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5896/1315/files/42272672094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7383/1073/files/blank_certificate_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/fiwiketanabujumarulax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/1777076264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2040/9256/files/tawazejeporinixerogir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4253/5581/files/59517392325.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 4

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_off00004f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F42 5320 bytes
SHA-256: 37ce6a2c317510c8618ad1b69e61145f8b5fe87b08a96c87e9c38a6b493c0c80
font_01_sfnt_off00006166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6166 9864 bytes
SHA-256: 3dae202da8f22c6f6477450d72c059a3748641cf95750e37b014b1555269bac4

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