Malicious PDF — malware analysis report

Static analysis result for SHA-256 26e34cc91d034b49…

MALICIOUS

PDF

40.1 KB Created: 2020-08-24 00:17:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f426a120c208174c73fe0b1b1187e0db SHA-1: 7f8557620be55dfb8f950b54a72fb8c3a08c23f4 SHA-256: 26e34cc91d034b49913ed5aa8817c94f3094b9838439c6172712b01e2b967b64
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, appears to contain text related to 'peptic ulcer disease pathophysiology pdf', suggesting a lure to disguise malicious intent. The ML classifier strongly indicated maliciousness, and the presence of a redirector link is a high-confidence indicator of a phishing or malware delivery attempt.

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=peptic+ulcer+disease+pathophysiology+pdf In PDF document text
    • http://files.unioncongregationalucc.org/uploads/1/3/0/7/130739480/2ac5a.pdfIn PDF document text
    • http://wafilu.athenstherapyco-op.com/uploads/1/3/1/4/131407089/1885880.pdfIn PDF document text
    • http://files.machinecrazyforever.com/uploads/1/3/0/9/130969356/tolipeleto.pdfIn PDF document text
    • http://files.youngatartmn.com/uploads/1/3/1/0/131070722/b8b8db69.pdfIn PDF document text
    • http://tisopeju.alonsotriguerosphotography.com/uploads/1/3/2/3/132303382/7b7f20764a2d898.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/1/0437/6225/3978/files/ps_form_2976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/effective_communication_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/86061222849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/wakadumexuxuviwifan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7022/5574/files/fourth_definition_of_acute_myocardial_infarction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2466/1154/files/xudulujoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0631/2098/files/bepefaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/8164/7526/files/35429179334.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 8

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_off00005efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFA 5520 bytes
SHA-256: a323a34b59c61979d1f447e1d7f847026ab45f03f1bccb45b987818f2f89d9da
font_01_sfnt_off000071ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BA 9980 bytes
SHA-256: 1ee5297f6237c0efcd27537f6cb10435204c95e087ea2710105cdeac8a2c2121

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