Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9b96c73b81d185…

MALICIOUS

PDF

68.0 KB Created: 2020-08-13 19:16:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b1b27bf6a7e73f421b6066350b65a5a1 SHA-1: 595836a78d6e21a55fb62fb4734b46919751d5d4 SHA-256: 3d9b96c73b81d185a9114f0ab85e9992ae0028e938dc719eacafc415242c4575
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. This indicates the document's primary purpose is to lure the user into clicking the link, which is presented as 'Beatles sheet music pdf piano'. The link redirects to malicious infrastructure, likely for further exploitation or malware delivery. The presence of a large number of external PDF links also suggests a link farm for SEO poisoning or traffic generation to malicious sites.

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/wb?keyword=beatles%20sheet%20music%20pdf%20piano In PDF document text
    • http://files.gratefulfredsukeleardeterrent.co.uk/uploads/1/3/2/6/132682787/8219328.pdfIn PDF document text
    • http://files.dryreefband.com/uploads/1/3/0/7/130738951/3b5fc0054ffc.pdfIn PDF document text
    • http://files.beanandro.com/uploads/1/3/2/3/132302711/c073d.pdfIn PDF document text
    • http://files.rodbrunet.com/uploads/1/3/2/7/132740692/jufemised_lepufa_leramav.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/1/0430/5901/9933/files/tuwetega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2504/7463/files/94332760246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/cable_tray_standard_sizes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9639/1323/files/wusowavomarazega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5436/6877/files/68509016354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1373/4563/files/blank_calendar_january_2015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/kudanumuzas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6036/2392/files/18718250527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6773/4171/files/disud.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB21F 5348 bytes
SHA-256: f766ac9e70adc08d1f35218724323ac0e53a6471db483babe9b12220d7569911
font_01_sfnt_off0000c429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC429 12644 bytes
SHA-256: 44fbe225c2c4bcaa11469653251d1ebceacb4f3311e1bc0014afb851e933185b
font_02_sfnt_off0000edf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF5 16120 bytes
SHA-256: 184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832

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