Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e683e18f1d299e…

MALICIOUS

PDF

36.1 KB Created: 2020-08-24 15:23:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3dcd0691af304f5c3369b724449e90eb SHA-1: 3e083af03391ecc45680edff86a5b624440a2478 SHA-256: e5e683e18f1d299efa3f1359636b137c63ee39550bc1698bb09cccd4ba96888b
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=acca+f9+textbook+free'. This URL is presented within the document body as a lure for a free textbook. The PDF also contains a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The primary malicious IOC is the ttraff.com redirector.

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=acca+f9+textbook+free In PDF document text
    • http://files.kwdavis.com/uploads/1/3/2/7/132711966/pududar.pdfIn PDF document text
    • http://files.sugarrimbar.com/uploads/1/3/1/8/131856430/jijopuxugap.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/1/0432/0195/3952/files/raduvonikazur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/7309/8143/files/2006_ford_escape_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5920/7582/files/aptransco_syllabus_for_eee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/2920/9759/files/automation_in_clinical_biochemistry_laboratory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7336/2325/files/uc_browser_java_apk_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6465/6026/files/acls_provider_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/10640419084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8732/2522/files/10049016019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9208/0795/files/atharvana_vedam_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6106/7427/files/13689624714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9100/8418/files/human_rights_watch_world_report_2019_cuba.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 3

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_off00004fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FBE 5084 bytes
SHA-256: be6bcf48f2da5f39b9394377b5e1e01132d50477d6060980c389d26ad5924612
font_01_sfnt_off00006117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6117 10280 bytes
SHA-256: c9e5712f62f1db0b4687be0472f57b9ff56ec4ac34e70cea3b4d2e17eadd8419

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