Malicious PDF — malware analysis report

Static analysis result for SHA-256 c49e6c7b55e6c333…

MALICIOUS

PDF

46.2 KB Created: 2020-10-16 01:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: fce4966cdcda4a60249f51922587d915 SHA-1: 66cdbe9705ecbeb7962466aef5ebe67eae1205cb SHA-256: c49e6c7b55e6c333cfdd33bf3c57ed9d216921b524fada21fe95ccf33fa5d3fd
154 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is 'https://gettraff.ru/123?keyword=spider+man+3+psp+android+game', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to game-related keywords, suggesting a lure to attract users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/123?keyword=spider+man+3+psp+android+game In PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/banagefasusum.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/fibawubaxavuvabu.pdfIn PDF document text
    • https://zeginuvo.weebly.com/uploads/1/3/0/7/130775519/natuxen.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/faxenute.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/4d007292-97f7-4f50-83ab-466ce040761f/pilava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1902c5cf-dc86-4337-b5b5-e03c0a683f83/39898789972.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/effb2963-5232-4a7a-ad4b-2f3799ec13ca/24797388774.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9accd916-4375-42a4-ba02-20b4a4ff0631/71302964423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2971/6374/files/fallout_shelter_2_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1116/2790/files/you_dont_have_to_call_me_darlin_john_prine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9251/8057/files/dino_run_3_unblocked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3441/8586/files/paper_bead_roller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3042/4985/files/23597904747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d176bbc-c625-4568-8133-109d3c3b0335/jumiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02e1f6f9-759b-483b-b168-dbe94dd97dbe/12102042180.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adbbb98a-b47b-4aff-a962-b29742e31abb/wimorufulokumapoxapiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17cb9c95-1a93-43cf-a0f0-3be73db5d29c/7784884344.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62068204-b1c2-4d9d-b99d-edde2c609fe3/88159962556.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6853 5220 bytes
SHA-256: 13a0d11e0a4a1d8af3fc7c7319c69340e77293f429898e44a2779368df7a6d58
font_01_sfnt_off000079e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E1 10492 bytes
SHA-256: c4c93a5b1de11e0f24283ace994edba4b22b1ce96b9d6c81bc8b8f60deca5534
font_02_sfnt_off00009d98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D98 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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