Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb4a389e362d2d4…

MALICIOUS

PDF

106.8 KB Created: 2020-08-09 21:00:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57883501c50cfa78088cb51a6289ba5e SHA-1: e8c47b70d223f5a9e4e492d519d6d7b86c19d95f SHA-256: 8fb4a389e362d2d42e386c99a7d4ac4994500cc87c3cf205fa72a297e861b234
194 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, ttraff.com. This domain is used in a phishing lure related to competitive exams. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=important+full+forms+for+competitive+exams+pdf In PDF document text
    • http://files.busybeeorganize.ca/uploads/1/3/0/9/130969004/gojebifazalomo-maxurapokenoxo.pdfIn PDF document text
    • http://files.sketchytours.com/uploads/1/3/2/7/132740805/gipazavurekoke-dadokidasukom-zetidavuwovesiz.pdfIn PDF document text
    • http://najones.wakefieldgarage-doors.co.uk/uploads/1/3/2/6/132681670/025e60c.pdfIn PDF document text
    • http://files.anchorcounselingwellness.com/uploads/1/3/1/0/131070238/9ec4e.pdfIn PDF document text
    • http://files.rogerhorowitz.com/uploads/1/3/2/6/132695832/02d37e45e813f.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/1/0434/7291/2549/files/84083200047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/60780249240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6309/6984/files/siwokawaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3359516262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/28525519688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1867/1512/files/asthma_action_plan_texas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/547263304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1709/9685/files/68237681722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/lubolepegojepusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9263/0940/files/ba_thesis_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0840/0280/files/15110450280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4126/5566/files/jajazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2890/6138/files/siperebevilibabep.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_off00015e70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E70 5364 bytes
SHA-256: 6ac3a427e074b0fa5fca5b744c6a05ad16aadd8af023efeeb99a0a81010f9108
font_01_sfnt_off0001709f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1709F 14560 bytes
SHA-256: 8ee7b9125d8ea8b2acb1149acf64ba3f3e219d9bd18f5dd8e2018415870deace

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