Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19d00eab71157e7…

MALICIOUS

PDF

46.3 KB Created: 2020-08-21 14:28:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 404ac01f0bb6540727f1fd00fa8e45a9 SHA-1: 5756d6756c613618ebcb09941f4e899a9b2fdc3d SHA-256: c19d00eab71157e7645f85f969e777bf0992b6dac68eaa96785cf56969caf239
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector pointing to 'ttraff.com'. The document body, though partially corrupted, contains text related to 'penalty for falsifying timesheets uk' and includes the malicious URL. This suggests a phishing or scam attempt, leveraging a lure to direct users to a potentially harmful site. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO manipulation or distributing malicious content.

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.
  • 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.
  • 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=penalty+for+falsifying+timesheets+uk In PDF document text
    • http://files.juliewiegand.com/uploads/1/3/1/4/131453480/dd1b72145be5fa.pdfIn PDF document text
    • http://wugew.bensonbunnies1971.com/uploads/1/3/0/7/130776445/fufimunub-nibifafesosov-vasux.pdfIn PDF document text
    • http://files.maryharttextileart.com/uploads/1/3/0/7/130739117/1885315.pdfIn PDF document text
    • http://files.saratogatemple.org/uploads/1/3/1/4/131438460/2644473.pdfIn PDF document text
    • http://files.huckleberryherbs.com/uploads/1/3/0/7/130740596/wutumirerowitudid.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/1/0429/3754/8959/files/unity_car_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/ejemplos_de_diagrama_bimanual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6562/0118/files/abbey_college_performing_arts_facebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/bixatev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2641/3725/files/xofavelavuwuxofaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4112/0679/files/java_concepts_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8458/5883/files/95660888555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3139/6501/files/30719520581.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_off000077c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C2 5348 bytes
SHA-256: 7a8b1ae952e6e1857bb6f7f66ddd04dd16d96f3c47dc21d02de5a69a168ed200
font_01_sfnt_off000089d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D0 10020 bytes
SHA-256: 4f4da21dcc1b10cf5fb051e1831c1e6aff5fc7a9c2e86e1a243dae5fab388e5e

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