Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f953cfe820ebf94…

MALICIOUS

PDF

39.4 KB Created: 2020-08-16 00:53:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0ad5f5fc0e5df2064a49dd43d97df091 SHA-1: 592d4ea6d6f10911fa4f78cbb0164c1e371c8e8f SHA-256: 2f953cfe820ebf94dd58a3a28abcc60c1e279be20d5caa603a5709cde5501afb
214 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=proforma+for+child+care+leave', which is flagged as malicious. This suggests the document's primary purpose is to redirect users to malicious sites, potentially for phishing or to download further payloads. The presence of a callback lure heuristic further supports a social engineering attack vector.

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.cc/pify?keyword=proforma+for+child+care+leave In PDF document text
    • http://files.omnibusologist.com/uploads/1/3/2/6/132695280/mokivedap_bexotuguxizinos_tujimu.pdfIn PDF document text
    • http://files.hollandsshelter.com/uploads/1/3/0/8/130813400/juwadijulibete.pdfIn PDF document text
    • http://mibewade.hmingrong.com/uploads/1/3/0/7/130740025/jifej_ribipij.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/1/0429/3669/6995/files/convert_blob_to_file_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5788/8936/files/metallica_back_to_the_front.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/logitech_quickcam_pro_9000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1842/6267/files/nicaragua_case.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/megazutikubujatagem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/rokoxub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/rolixupawabatewel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4670/7104/files/5157540778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5699/6260/files/59361563107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/zuxabodep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1144/8729/files/jozenubipimojuvado.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_off00005c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C86 5144 bytes
SHA-256: 83103aa6ddd909db52ca88700bbb161d23f79654144302048a1e44fd9aa7d67c
font_01_sfnt_off00006dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDE 10380 bytes
SHA-256: a0c78a35f2b2118c0623e9d72f0cf2c6a195d8edeba1dc2c49f58a4824894744