Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db295665aa6695a…

MALICIOUS

PDF

70.9 KB Created: 2020-12-05 23:46:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: d009a647b26d2dfaf23df868b825253e SHA-1: bba0a928c934251e078ce0d7c4a998af2ccdd482 SHA-256: 8db295665aa6695a601257a34f3d8864ae99c7b3c167f4df17e215f0fc4f78e3
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is part of an SEO link farm and uses a redirector URL, suggesting a phishing or malware distribution attempt. The embedded URL and the ClamAV detection point to malicious intent. The document body, though heavily obfuscated, contains text that appears to be a lure for users to click the provided link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/aws?utm_term=platform+picture+ka+gana+chahiye PDF link annotation
    • https://patewolenapew.weebly.com/uploads/1/3/4/5/134525441/1347063.pdfIn PDF document text
    • https://rodofuzox.weebly.com/uploads/1/3/4/5/134599037/1865682.pdfIn PDF document text
    • https://filavemegu.weebly.com/uploads/1/3/4/8/134883773/kegawidofajexibunaku.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/502c510a37c.pdfIn PDF document text
    • https://vizakadaji.weebly.com/uploads/1/3/4/4/134491897/mopesufusavejobujene.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe105f4f98375720a7f101/1606291552278/63531517465.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3342111f6a4198494abb4/t/5fc51989e18c5c478e9d5023/1606752649947/95596471045.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7362b9de-793e-4699-b35e-29cc2143e243/skyrim_presets_folder.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dac460f2895dc1e79d89/t/5fc3be939d79364840fffcbc/1606663828360/zewitofopelijofibaxilewav.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0de27085bf90c0efce9ba/t/5fc30ace3485235c862b0d3f/1606617807685/mosifusozuvilopigexuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/ashes_celine_dion_sheet_music_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc38122239b07229141b90e/t/5fc8186eb74dd54858cace08/1606948975527/weather_near_me_today_and_tomorrow.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/esl_lesson_articles_worksheets.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_off0000d910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD910 5416 bytes
SHA-256: ea53b82af8a1bc0229415e179219fbe62a712ccf20142ad6a09c06d0d99ebcaa
font_01_sfnt_off0000eb62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB62 10272 bytes
SHA-256: 65a426c85fbae0d088510d2e52fdb207d3a68a6e65717b009cbffd441eeb5bb7

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