Malicious PDF — malware analysis report

Static analysis result for SHA-256 163e31e84afe30c2…

MALICIOUS

PDF

84.5 KB Created: 2021-03-31 12:11:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0f2c473514decf1647270ee19ac23e52 SHA-1: dc4fff23d0913ed65233839258bc0638292858c3 SHA-256: 163e31e84afe30c27d2a0e0650bd7d7d5f32c0b76600a2ac9f001707bfb08682
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The document body, though heavily obfuscated, contains references to 'Clash of Clans resources generator download', suggesting a lure to trick users into clicking malicious links. The embedded URL `https://xezojetit.ru/wix?keyword=clash+of+clans+resources+generator+download` is likely part of this phishing scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xezojetit.ru/wix?keyword=clash+of+clans+resources+generator+download PDF link annotation
    • http://kigaruzolalo.mypressonline.com/xumogadezewowi.pdfIn PDF document text
    • https://sidufuzijek.weebly.com/uploads/1/3/4/5/134598689/gavekujibilomuvoba.pdfIn PDF document text
    • https://webunufilijamo.weebly.com/uploads/1/3/4/6/134677486/1170578.pdfIn PDF document text
    • https://gulezawajure.weebly.com/uploads/1/3/1/8/131858287/5981442.pdfIn PDF document text
    • https://jikabokuw.weebly.com/uploads/1/3/4/6/134658058/fijezewewatutorudi.pdfIn PDF document text
    • http://sesizuxewewax.mygamesonline.org/somogiperexide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zopenave/buderus_logamax_plus_gb_112_manual.pdfIn PDF document text
    • http://nabenejajoko.myartsonline.com/fusel.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/53762561451.pdfIn PDF document text
    • https://7afcd0b8-98df-42a4-afe0-9544d44c9539.filesusr.com/ugd/74e9cf_1263473d610547108f8fa49ed574bca9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/address_book_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/rawukux.pdfIn PDF document text
    • http://sajomapujozokux.onlinewebshop.net/orthogonality_of_bessel_functions.pdfIn PDF document text
    • https://8cff2b46-3289-4d4c-b6d5-84761b4963bb.filesusr.com/ugd/c91274_f5ed636fe7054f82be7aab6edbd7784e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/30225794945.pdfIn PDF document text
    • http://fuvuvadut.onlinewebshop.net/football_world_cup_2020_groups.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/38804873641.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/guide_to_real_estate_investing.pdfIn PDF document text
    • https://b913155d-2712-4fd4-bcc6-651970a8c456.filesusr.com/ugd/e39924_7a3a6cd9ae2c48d3af6db0ba71cc3e49.pdf?index=trueIn PDF document text
    • http://zininorenedalo.onlinewebshop.net/game_south_africa_catalogue.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/pentax_k3_iii_preis.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e98c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE98C 5232 bytes
SHA-256: a12eedf9c045347e6f91634b4e2b026b32d336e77749eea5d9d608696bd4507d
font_01_sfnt_off0000fb5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5D 10924 bytes
SHA-256: 1685b0f975171d9e9d9832faee596013a3a9d2b97c2e9cdac5288f9f653fb7d7
font_02_sfnt_off000120a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120A4 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd
font_03_sfnt_off000135d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135D1 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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