Malicious PDF — malware analysis report

Static analysis result for SHA-256 c91b0848917a8911…

MALICIOUS

PDF

42.1 KB Created: 2020-08-22 16:30:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03381bf631f121c896237f3d59cfa88f SHA-1: aa29c919acfc1f248c2ca7ed8676caca956de86e SHA-256: c91b0848917a8911525866a15e45b09c3f2f0f0beb3cfa82547eeadf40bb27f6
214 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a consumer reports article. The document body and heuristics indicate a phishing or scam lure, potentially aiming to harvest credentials or redirect the user to further malicious content. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm used for SEO poisoning or distributing malicious payloads.

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=consumer+reports+username+password+2017 In PDF document text
    • http://files.preferredfuturetherapy.com/uploads/1/3/0/9/130969426/lakozewabi-duvaliraga-zuzezune-dixuvi.pdfIn PDF document text
    • http://files.wetfutures.eu/uploads/1/3/0/7/130739704/dewubi-fulave.pdfIn PDF document text
    • http://rixudeji.freeformdanceacademy.com/uploads/1/3/1/3/131383483/lefozuf-nudekirirojitip.pdfIn PDF document text
    • http://gapuwede.byblosdevelopers.com/uploads/1/3/0/8/130874063/53deaf482f.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/1/0429/5272/0543/files/dafafuruv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/28068876324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1162/1543/files/how_to_open._db_files.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/93094596221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9281/1669/files/zuxajiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/4791/4394/files/caste_certificate_application_form_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7628/7648/files/78060813618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9252/4700/files/zuseke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1748/7011/files/17221802947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0667/9464/files/debezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/42103677381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/98388715511.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6613 5476 bytes
SHA-256: d0437209e675db0466ee505fc03267a96066d2420ec2c3cbb8468fdb9c4f302e
font_01_sfnt_off000078ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78AD 10072 bytes
SHA-256: b1afb6bd7b38e7a5b4db1653428e35725b197d97b836afa33ac702e7b441ae3b