Malicious PDF — malware analysis report

Static analysis result for SHA-256 5190a3082e0e20a7…

MALICIOUS

PDF

102.9 KB Created: 2021-03-13 16:45:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 00bf0cc1ca82606b925a13e440459fd6 SHA-1: ee96f83c95cd88227ad20f8ecc93eda0a468e0c6 SHA-256: 5190a3082e0e20a7c6204e64f879741024bc856896fd8c19253eb53ba6ffaf78
164 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a phishing or malicious content lure, indicated by the 'PDF_SEO_LINK_FARM' heuristic and the presence of numerous external URLs. The document body contains obfuscated text and references to movie downloads, likely serving as a pretext to disguise malicious links. While no scripts were directly extracted, the PDF structure and URL patterns suggest an attempt to redirect users to potentially harmful content or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://golowaki.ru/aws?utm_term=jack+reacher+2016+full+movie+download+in+hindi+filmyzilla PDF link annotation
    • https://cdn.sqhk.co/dosojegomugu/eUAbarS/2_hard_boiled_eggs_calories_and_carbs.pdfIn PDF document text
    • https://wixoxane.weebly.com/uploads/1/3/4/7/134734379/kovutapogixim_kosopokalavufab_rusijenoboz.pdfIn PDF document text
    • https://cdn.sqhk.co/xovatagemi/jghdMgc/98780903338.pdfIn PDF document text
    • https://vevikonupefafo.weebly.com/uploads/1/3/5/3/135391347/tedisatired-jezoxoku.pdfIn PDF document text
    • https://cdn.sqhk.co/nipigagavadu/ihjhdhb/slide_away_chords.pdfIn PDF document text
    • https://cdn.sqhk.co/gukituzaju/jcxqhc7/39266333489.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://95043331-d9de-4498-ad98-35b8ac3ee23f.filesusr.com/ugd/5740b2_309d54f464154d4d9e6146c46326be2b.pdf?index=trueIn PDF document text
    • https://ca3ec1ac-6ff7-4c8f-ae0f-86a30d86e335.filesusr.com/ugd/3615fb_8f51e98c81e64c208fb657995fccc831.pdf?index=trueIn PDF document text
    • http://lelesajik.epizy.com/c_form_online_check.pdfIn PDF document text
    • http://golomaje.rf.gd/barfi_sinhala_subtitles_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/38744772982.pdfIn PDF document text
    • http://tininababa.rf.gd/bigasuo_projector_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/anabolic_steroids_davis.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/zozafemagofitutuxiga.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/14779725373.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/jigatibezi.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/81652537432.pdfIn PDF document text
    • https://937a8a2d-b41a-4163-aff8-eda6db263557.filesusr.com/ugd/21e6f2_537c815fc7654a4d96991c3d248cf345.pdf?index=trueIn PDF document text
    • http://xojazexodiwosi.epizy.com/fodopalelaxogawofe.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/how_to_convert_2d_to_3d_in_autocad_2016.pdfIn PDF document text
    • https://d17f4099-ecc1-42b1-9c73-51521793457c.filesusr.com/ugd/4a2613_fa9d5f3693be4567a9f3ddcff2c0fb17.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00016e44.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16E44 19308 bytes
SHA-256: 744024eeba0077645af37d158b3dfdcf489c6373dc9213f5001735f1403f19f4
font_00_sfnt_off000130d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130D5 5920 bytes
SHA-256: 64620693822020795acdb143b622905309810ea37b4740392857933ac3438901
font_01_sfnt_off00014505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14505 12844 bytes
SHA-256: 5e69026bbb88d9a545d0ec54098eab3aedecc9d8f7e26db23c76450ecbef9cdd

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