Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2c35ce5628f9645…

MALICIOUS

PDF

40.3 KB Created: 2020-07-30 11:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f556e9d41a81d1e27a9b8535e1fbfa80 SHA-1: efaebe2ff535b9b4bb141e4149cc77d12c8f6855 SHA-256: e2c35ce5628f964535ddd41dd4fc055ee246aa369dd3b4356341eb461f2ff355
202 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'exercises pdf' and a download call-to-action, suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content. The primary malicious IOC is the redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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=possessive+pronouns+english+exercises+pdf In PDF document text
    • http://files.markmirabello.com/uploads/1/3/0/7/130776656/naxisabozuragawibelo.pdfIn PDF document text
    • http://files.sharedservicesct.com/uploads/1/3/1/3/131398475/nitak.pdfIn PDF document text
    • http://files.danielkies.com/uploads/1/3/1/4/131407227/8690a5.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/1/0431/2409/7175/files/70162597989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6294/2106/files/tawurutolireletojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6273/0645/files/fiwovegarorufaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4638/8380/files/40673474915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0595/0626/files/gokapefimawaxove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69143450337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6045/2760/files/93913843395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4920/5405/files/loxapub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/28219180519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0256/7588/files/6080225425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/13810700913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/padaluzulobowek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5838/8374/files/nobigukuwetaj.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_off0000604e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604E 5136 bytes
SHA-256: 589d07a19bbc2aa21ad00082a95e896864a9050669c1ec2d47569a7002b56496
font_01_sfnt_off000071c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C3 10068 bytes
SHA-256: 6c79f0de8f88129b8a49fc9c6f13499d5be53748f79b9defefea6ced825d48cb

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