Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc09f22daf9d3a4…

MALICIOUS

PDF

80.8 KB Created: 2021-03-13 12:42:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de245013bf2cda03bcd0cad969ce340b SHA-1: 99e3e93e0d9233a1e3dbe348394b0fc4030b48cf SHA-256: abc09f22daf9d3a446618796df2cf741a6ddad8a58392a291695da57d8545b42
196 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is part of a link farm and uses a password-protected archive lure, suggesting it's designed to bypass security measures. The embedded URL 'https://lozipotod.ru/wix?keyword=my+hotmail+account+is+locked' directly relates to account security, a common phishing pretext. While no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://lozipotod.ru/wix?keyword=my+hotmail+account+is+locked
    • http://lovapezelewog.iblogger.org/debate_school_uniforms_pros_cons.pdf
    • http://deutschebank-meine.com/jopazumopomesujamu00r31.pdf
    • https://gurekageta.weebly.com/uploads/1/3/2/6/132695257/dirugutodopasub-zerositirobon-kuvuvidu-pobisebepagofuk.pdf
    • https://jumugixaz.weebly.com/uploads/1/3/6/0/136028190/fipodigeve.pdf
    • http://nogefoxezegu.22web.org/bickerstaff_neurological_examination_book.pdf
    • http://online-bestshop.xyz/can_you_learn_krav_maga_at_home10wkj.pdf
    • https://verijijul.weebly.com/uploads/1/3/4/8/134861220/zozapebaxagelokubopo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://a84030a7-2e48-4039-807a-383e2b7216cc.filesusr.com/ugd/c5d40f_c25aac0510da4f9f9f59eceaa2215987.pdf?index=true
    • https://uploads.strikinglycdn.com/files/23b73d44-7034-4281-a7c4-d9aa3c84659a/orbit_decorative_spinning_sprinkler.pdf
    • https://uploads.strikinglycdn.com/files/5bc83f97-c3cf-41f1-adff-44b83c969f84/mujujivugopetipaju.pdf
    • https://uploads.strikinglycdn.com/files/c0531730-108a-4fd6-a9f6-0770c8278c2b/java_basic_game_programming_interview_questions.pdf
    • https://e7ba4f66-d023-404d-a355-a5b98970f127.filesusr.com/ugd/cac9e4_f666e22969ee4361a3f86838177022e2.pdf?index=true
    • https://s3.amazonaws.com/zisulamisozoto/fender_twin_reverb_cabinet_for_sale.pdf
    • https://8b8c7005-3af0-45a1-8e5b-a6902caa9335.filesusr.com/ugd/dbd7d9_4553d85ab70c4155afdd6c264111fdd1.pdf?index=true
    • https://s3.amazonaws.com/toniseligiwuzux/fibe_tv_guide_not_working.pdf
    • https://uploads.strikinglycdn.com/files/e813faa2-36b5-40ca-93d4-a58e716ed4d2/74191954098.pdf
    • https://uploads.strikinglycdn.com/files/7f4a2503-4e77-4056-bc17-e3a21be8daf3/what_do_you_say_when_running_for_class_president.pdf
    • http://kenumubozejofum.epizy.com/36413936330.pdf
    • https://s3.amazonaws.com/robumuduluwise/43574971845.pdf
    • https://9e9203d9-9f5b-42f2-a849-05e42d741f90.filesusr.com/ugd/3527d5_6c5e0f39e8cc4d33bfd0ac9212a8ea78.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eebe.bin
80c2580ff4bc54b53812840ce92fd0ca39afbfb6af6b3607d5c844b5bb38792c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBE 5136 bytes
font_01_sfnt_off00010016.bin
f5b439d21941ed529108a9d6e0e3e6df0934a42b57328302cde538b4b63ac7ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10016 12340 bytes
font_02_sfnt_off00012834.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12834 4324 bytes

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