Malicious PDF — malware analysis report

Static analysis result for SHA-256 e42361d4b817d2ab…

MALICIOUS

PDF

43.8 KB Created: 2020-08-04 21:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b84cd9896081329fdf0671644c9b947 SHA-1: 994ba8eb2d2ebc51297b21f0b3b3a7c5c77b72f3 SHA-256: e42361d4b817d2abbd3cd391c787654521afd860e8953d5a1a1b3363e77bade1
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. The document body, though heavily obfuscated, contains the text "wing chun pdf techniques" and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous other links to Shopify domains, while individually benign, contributes to a link farm heuristic, indicating a broader attempt at SEO manipulation or traffic generation for malicious purposes.

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=wing+chun+pdf+techniques In PDF document text
    • http://files.starlightdancecamps.com/uploads/1/3/0/7/130775970/1b4c393.pdfIn PDF document text
    • http://files.strategic-concepts.com/uploads/1/3/1/3/131384127/tekifozage_lotizakile_rajuxuvatakow_memulabad.pdfIn PDF document text
    • http://files.suzyharrisdesign.com/uploads/1/3/2/6/132681308/jeligabitino.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/1/0433/4170/9462/files/juzizexupebopuvadipoxunuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/24710771111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1315/2673/files/98512094864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3606/5435/files/gulukovisebewegulijimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mefawubizujoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/tenor_banjo_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/12575775622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/76642817097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9744/7831/files/6231921451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7765/4942/files/nagowawaputixiradapux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4283/1522/files/58052221559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9764/0360/files/nddot_road_conditions_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7362/5500/files/pumped_up_kicks_bass_tab.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 3

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_off00006dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC0 5220 bytes
SHA-256: ad79c266146e29254fca2cdd0669d6612f4f835b74466941f3bff42d3edea3db
font_01_sfnt_off00007f9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9B 10012 bytes
SHA-256: bbafcb6b3f1f1e8176b8e602eae0fc9ac3276940136658d3fa4be755a3496aed

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