Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c02222c88099c0…

MALICIOUS

PDF

47.3 KB Created: 2020-10-10 15:13:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 712215a5c4c7255a8cf1f8fdb659a1fa SHA-1: 2d92ce56a7b32e8aa93c59e443d6dd090367276a SHA-256: 01c02222c88099c0b063d15b59a4ecf0a0ece24fb7826a7cf20782c3ca3ac8a9
194 Risk Score

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://gettraff.ru/strik?keyword=chatrapathi+songs+free+download In PDF document text
    • http://puxit.sabinejewelry.com/uploads/1/3/0/9/130969813/xilurijevegezuner.pdfIn PDF document text
    • http://binomerid.ancestral-pathways.com/uploads/1/3/2/8/132814930/8057185.pdfIn PDF document text
    • http://files.bigwhalesmakebigwaves.com/uploads/1/3/1/4/131406344/13cbc.pdfIn PDF document text
    • http://files.puremichiganminiaussies.com/uploads/1/3/0/7/130775017/60766bb2d831.pdfIn PDF document text
    • http://files.awakendancetheater.com/uploads/1/3/2/7/132740488/c8b5436a64cf.pdfIn PDF document text
    • http://rimop.simonbaeckens.com/uploads/1/3/0/7/130738591/1050815.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/edec7767-1595-49b7-b09f-f5bbdb77faa0/29393387006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6a8a6b0-ae3f-43e9-a8c5-db8a2555be2d/robiwaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7db20465-e341-4de9-a1ca-5f9a203b142e/64921983810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2924/0727/files/smash_ultimate_classic_unlock_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/53592326316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8077/7373/files/air_pollution_questions_and_answers_in_hindi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2186/9471/files/sources_of_error_in_back_titration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3413/9546/files/castleton_derbyshire_real_estate.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7357 5300 bytes
SHA-256: caddd635e4f879f17b9cd750e7417978c2614d5b9c159c029f62655515eb3c9a
font_01_sfnt_off00008568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8568 13700 bytes
SHA-256: 068ab6d10152588cdc77d1d039e0b44df129a357913b20b312e46ed2aa9c0220

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