Malicious PDF — malware analysis report

Static analysis result for SHA-256 63466f1817cb4932…

MALICIOUS

PDF

77.1 KB Created: 2021-03-04 13:28:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 9906007829ab01295ca9f9d900dbca1f SHA-1: ad3e1db45ded93145f388bd616b994e63c1d9558 SHA-256: 63466f1817cb49320a25661dd9290aacbf05783c09c2fff38829958e6e65732e
186 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as Pdf.Phishing.Trojan. It contains numerous external links, many hosted on disposable domains, suggesting a link farm or redirection scheme. The document body, though partially corrupted, indicates a lure related to a 'Kenmore elite oasis top load washer manual', likely to entice users to click on the malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xezojetit.ru/wix?keyword=kenmore+elite+oasis+top+load+washer+manual PDF link annotation
    • http://tokexal.medianewsonline.com/how_to_solve_fghx.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/95801201718.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/how_to_reset_a_kenmore_dishwasher_665.pdfIn PDF document text
    • https://jitojadafolad.weebly.com/uploads/1/3/4/4/134404030/6a0d5.pdfIn PDF document text
    • https://lumosezuto.weebly.com/uploads/1/3/4/4/134499790/2620411.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d5fd0048-bb8d-45a1-ba21-28d1cb0b7162.filesusr.com/ugd/5e8de6_3e37f4e72fa4412c924268980964a459.pdf?index=trueIn PDF document text
    • https://ae26bae5-b1f3-4fb2-a0ba-5d2f2d23988c.filesusr.com/ugd/aec2ea_7f9a1f47168444cca9190789d18206e1.pdf?index=trueIn PDF document text
    • https://69f6cc44-9198-4e41-bafa-43503dba92bf.filesusr.com/ugd/dec231_7405237a1d624662ae15cdece887a1f4.pdf?index=trueIn PDF document text
    • https://5ce19dfa-329f-495d-88d1-e1e7834d9072.filesusr.com/ugd/d902bb_b334c481d71a41d2ae1443f050315fb5.pdf?index=trueIn PDF document text
    • https://a1f0096d-76f5-425c-b826-5ccbd312c1bc.filesusr.com/ugd/8f8c07_666bfc8cc15a4dc7b5794879a88beb91.pdf?index=trueIn PDF document text
    • http://jusaketij.rf.gd/wavakuwazunerabowus.pdfIn PDF document text
    • http://widaliwadon.epizy.com/jbl_xtreme_2_speaker_-_black_jblxtreme2blkam.pdfIn PDF document text
    • https://d9226533-59f4-4737-ae77-cfa9cdee5378.filesusr.com/ugd/d7c203_050610c8e2dd4526b979a0bb74966c66.pdf?index=trueIn PDF document text
    • http://bapiwixobenilax.rf.gd/dudixigosunerapeloneguw.pdfIn PDF document text
    • https://e4fb9bf1-a3d6-4767-9bf2-2a1021e5dc09.filesusr.com/ugd/53cfc7_21b18ee70ba44cee97025983e43c62f4.pdf?index=trueIn PDF document text
    • https://af18ad75-7652-4b25-b9e0-8da5fded0af1.filesusr.com/ugd/529385_945102d3d54b448b925c1e18d2b70932.pdf?index=trueIn PDF document text
    • https://5efcf519-4c71-4be9-a00f-e1d47ba804c5.filesusr.com/ugd/ebcc4b_e0d932d9b49a456b8078d1589b1440d6.pdf?index=trueIn PDF document text
    • http://gejulakan.epizy.com/61901198176.pdfIn PDF document text
    • http://jujobope.atwebpages.com/tuwunadi.pdfIn PDF document text
    • https://70fbc5f3-53e4-4072-9ff7-a5862d19847b.filesusr.com/ugd/bb3bf9_d5fd3db5d0ed4dbba2d41b53dd37ef52.pdf?index=trueIn PDF document text
    • https://ec8c99fd-5413-4e38-b6a0-2ccbba71fc6f.filesusr.com/ugd/de02f3_cce96dbdeea8414796c8133fbfb47a82.pdf?index=trueIn PDF document text
    • http://wulitebajanuba.rf.gd/bozeman_science_tour_of_the_cell_worksheet.pdfIn PDF document text
    • https://21319658-e817-4d6a-846f-872ccfe0f0c2.filesusr.com/ugd/982af2_41b38062408b46d1b94d6047f2271f5a.pdf?index=trueIn PDF document text
    • https://89d9876f-4e47-4433-ab5b-8da47ae3ae5c.filesusr.com/ugd/37c326_5beb32c835bb4915a38438396979214b.pdf?index=trueIn 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_off0000ebec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEC 5260 bytes
SHA-256: dca2ff51978ae2d50b302c4183eaa27dfacb6f597f590bf759496b918abe85f5
font_01_sfnt_off0000fdb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB3 11568 bytes
SHA-256: d022f34f8eecc03247b8e18146bf5fc7af342446f6bc2da6debff3af0d36b013

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