Malicious PDF — malware analysis report

Static analysis result for SHA-256 aafc120cda5a666a…

MALICIOUS

PDF

37.5 KB Created: 2020-08-23 01:07:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b6f16e052280e40b58b867ff343e596 SHA-1: be34ae95d6300add9c4cef9e77aa61a6ce73770e SHA-256: aafc120cda5a666a17d8b73f00d28953a9406a7f8ea288a50a859ea452aa0b57
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a common technique for link farms. One of these links redirects to a known malicious domain (ttraff.com), suggesting a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the analysis of specific payload delivery mechanisms.

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=brahma+vishnu+shiva+ede+kannada+song In PDF document text
    • http://files.combscoffee.com/uploads/1/3/2/7/132740553/badejud.pdfIn PDF document text
    • http://files.rbflooringsolutions.com/uploads/1/3/0/7/130739864/vobekorukero_gadodazu_kevatamizes_vadutujulinelo.pdfIn PDF document text
    • http://zikelo.larnemusicfestival.com/uploads/1/3/2/6/132683169/c1967e61aa7f3d.pdfIn PDF document text
    • http://files.theetherealdream.com/uploads/1/3/1/3/131382243/2f43d609c5b965.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/1/0429/0645/2127/files/fexafabavuvebove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3623/8236/files/71258865513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7287/1832/files/4005164949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/41244656702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5975/7734/files/xuvojufamuvipegesonek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9437/5576/files/present_simple_present_continuous_exercises_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6107/6387/files/wokoditez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72619586694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0247/8237/files/cours_administration_systme_sous_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/fuzajibupaled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/65035112494.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 6

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_off00004af5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AF5 5380 bytes
SHA-256: 4f277b67b3d7f25838b758cdf547b302d6cb03df25d72411e6091c6a50890522
font_01_sfnt_off00005d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D26 14448 bytes
SHA-256: 08d4a21db6ef926b6f25f92b6b49ac76eed8551d5d826088b8055f9815dbdd36

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