Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bd30720afe96350…

MALICIOUS

PDF

81.0 KB Created: 2021-03-16 04:02:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3096d5435a4106c90eaf43a4f822d3c5 SHA-1: cf95a83c2566a0854b8f758cccb23ddff313ba4e SHA-256: 1bd30720afe96350bccdcc021bb665cbc8b0cb3c622a66a98a926ed7fcfab68c
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://fokemale.ru/wix?keyword=pokemon+platinum+ds+game+walkthrough PDF link annotation
    • https://xisuviwilizej.weebly.com/uploads/1/3/4/3/134320176/7999589.pdfIn PDF document text
    • https://xamodeximafu.weebly.com/uploads/1/3/2/6/132681508/b768425.pdfIn PDF document text
    • http://xutiwavu.iblogger.org/mavupoxa.pdfIn PDF document text
    • http://xifelaseb.22web.org/certain_synonym_formal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fa886832-b9e3-4ce5-a98c-97da2614721f.filesusr.com/ugd/9f8050_66f46ef7c932419fa5c462f92626aa51.pdf?index=trueIn PDF document text
    • https://6acbaf94-bc62-4fdb-9a00-914544f0b606.filesusr.com/ugd/3ee118_b33e8ebac0094f8484268ef1da953cf7.pdf?index=trueIn PDF document text
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_716da12eb576478b900f31ba130168fd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lososimap/51805960655.pdfIn PDF document text
    • https://307a23dc-bb60-4906-9a68-69e45957aa19.filesusr.com/ugd/d2057d_b68fba8673d4428a9f370da1e2df0fb2.pdf?index=trueIn PDF document text
    • https://9462281c-6212-45c1-8f90-c4e3c363a226.filesusr.com/ugd/007d40_5ac975d7f9714503aca8445e311a34a7.pdf?index=trueIn PDF document text
    • https://98cdd5c5-c43e-49eb-9373-39517e896cbb.filesusr.com/ugd/90661f_5d0e39cbf8364875922623ea93fc6543.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/10_thirumana_porutham_meaning_in_tamil.pdfIn PDF document text
    • https://dbba0f06-1911-40f0-8c80-a2638c7f81cc.filesusr.com/ugd/b13fd1_691167bd440e4d1da072d4aa668b9887.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lezerawe/sipaj.pdfIn PDF document text
    • https://a98f38e8-5810-4fc9-be6a-c3d78c7c4f9f.filesusr.com/ugd/921909_eb903cbda3274c0392d319b4bbb9d37c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/1858870463.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/30396551502.pdfIn PDF document text
    • https://237a2310-9536-43ad-add1-fe73b840a51a.filesusr.com/ugd/8b319d_2e99c88951294bcabfcc8d29f04473e7.pdf?index=trueIn PDF document text
    • http://tinobisum.epizy.com/b_arch_thesis_projects.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_off0000f1fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FE 3060 bytes
SHA-256: 544ea592258455d569d5741c86086ef9305d7ecb0866d37c590c06ae64803f35
font_01_sfnt_off0000fce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE8 5528 bytes
SHA-256: fd4bc0c81105b6817d73e5f8fb70385fe601ae9f2f1ebdb6bbf64d0dea8e14fc
font_02_sfnt_off00010fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA3 11644 bytes
SHA-256: cf9613f3329d83a178633c5c7c5d12235a63f5012d06e154b1bb7e5ce551c865

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