Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d208dfbbab58260…

MALICIOUS

PDF

112.1 KB Created: 2021-04-06 06:11:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: df6e169de44015263546cb180a6aa738 SHA-1: 02220dd168681bc257c978cdd411e058d9d08590 SHA-256: 1d208dfbbab58260d80033ea3027d8b5bb1f17a1aed915fc2136183dd3725abc
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a phishing or SEO manipulation tactic. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further support its malicious nature. While no scripts were extracted, the presence of numerous URLs indicates a potential redirection to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/award?keyword=agile+scrum+pdf+methodology PDF link annotation
    • https://silodadut.weebly.com/uploads/1/3/2/7/132712229/7773094.pdfIn PDF document text
    • https://mejotowud.weebly.com/uploads/1/3/0/9/130969644/e2c3e.pdfIn PDF document text
    • https://tarebizadutobi.weebly.com/uploads/1/3/4/3/134310067/985272.pdfIn PDF document text
    • https://romenugerod.weebly.com/uploads/1/3/5/3/135317494/be93ae035dc17.pdfIn PDF document text
    • https://vexixizeled.weebly.com/uploads/1/3/1/3/131384380/2796095.pdfIn PDF document text
    • https://jubiporosevuzu.weebly.com/uploads/1/3/2/6/132695682/6609921.pdfIn PDF document text
    • https://tizelizenofus.weebly.com/uploads/1/3/0/7/130740364/nobotatotevo_varasovawamuvu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e9abb47e-19e5-4ec2-9f3c-2aa4e6f2bf0a.filesusr.com/ugd/92be99_4aa4bb43b5114471b8e2bf4b50d51c0b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/which_pressure_cooker_is_best_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/fobodowufog.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/17121695836.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/977c86c3-4baf-4558-86d6-163f4f7e96c3/all_clad_slow_cooker_not_working.pdfIn PDF document text
    • https://7d33af4c-acfd-4996-9436-348e89828b5b.filesusr.com/ugd/289672_e52f67231a1e440c99f05b0906fd0ae7.pdf?index=trueIn PDF document text
    • https://c751e6e8-0850-424d-b14e-d7ae46260796.filesusr.com/ugd/bc1028_2725e5adc9dc4f53b85954753ea5da1d.pdf?index=trueIn PDF document text
    • https://3465328d-eb21-4af5-a94e-b8fdacefaafa.filesusr.com/ugd/c63bf9_ce206d157ff642b685fe1f89ea9b58fe.pdf?index=trueIn PDF document text
    • https://c9977776-9e37-4432-9eae-e541147807da.filesusr.com/ugd/bb6cc6_0302baf3bea9459bbc001b68f965b0bd.pdf?index=trueIn PDF document text
    • https://c1bbde11-5cda-4f7c-8b74-b2fe90b484f5.filesusr.com/ugd/1c8c6c_02a2c637b8f3427cbffdfb39527fef42.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/872b2ae2-a5a2-4053-8908-c54349928d6d/easy_piano_music_for_beginners_with_letters.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/74843402144.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_off00017943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17943 5448 bytes
SHA-256: 7bf9f0250286855e233f76441d25a9ee4072e11742e60d9e721599ef819e2af1
font_01_sfnt_off00018bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18BB7 11636 bytes
SHA-256: dd478799ba70514c9451578093c9b00fccb857a15478c755ea5403ce2e1a1d41

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