Malicious PDF — malware analysis report

Static analysis result for SHA-256 797d8f65134c771d…

MALICIOUS

PDF

42.5 KB Created: 2020-08-17 07:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5cfb6a90cfc530c296983e9a6858c3e SHA-1: 0216bb20c16ef44a0f3c90a04ebd70ca2971d972 SHA-256: 797d8f65134c771d83d3b299b463ccb48c09c1c7b765997c615262a6bab30c1c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a redirector, which is flagged as malicious and associated with SEO link farms. The document body, though heavily obfuscated, contains the same URL and text related to hair straightening treatments, suggesting a lure for a phishing or scam. The presence of embedded URLs and the ML classifier's high confidence further support this assessment.

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.cc/pify?keyword=hair+straightening+treatment+without+formaldehyde In PDF document text
    • http://sevujo.teambor.com/uploads/1/3/2/7/132740478/9351675.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/1/0430/3483/7149/files/73096436835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/ways_of_the_world_textbook_chapter_14.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/86753452939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/cambridge_checkpoint_english_workbook_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1420/1250/files/company_introduction_brochure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9432/4888/files/88746029941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0456/7450/files/bofevaxepikowuwavisul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2716/1507/files/funefodewizemibipev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8553/6161/files/kohler_oil_filter_cross_reference.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/list_of_weight_lifting_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/hindu_baby_boy_names_starting_with_n.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/3025110597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.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 2

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_off000068b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B0 5476 bytes
SHA-256: d27928d7b3add0ba89d92e8e66c3133299494714f6914db435d45b52f736e9ab
font_01_sfnt_off00007b32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B32 9920 bytes
SHA-256: b9e7867244899875bf21bd04f7f405aa7099b3ec2274dd26cc14619305cbf684

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