Malicious PDF — malware analysis report

Static analysis result for SHA-256 299a1c0bbe86037d…

MALICIOUS

PDF

75.2 KB Created: 2021-03-03 03:28:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 236f2c783ddb6594b4a7a37cfa0f860b SHA-1: aa4eb94bb59d4740fe8ec735177062b1a15f9026 SHA-256: 299a1c0bbe86037d543c2d31f30637dc1d373db74761aad54be19f5debd742e3
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body contains a deceptive lure related to a car issue, likely to trick users into clicking the embedded URL. The URL points to a link farm, a common tactic for phishing or malware distribution.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/wb?keyword=service%20engine%20soon%20light%20blinking%20pontiac%20grand%20am PDF link annotation
    • https://lameperitilexi.weebly.com/uploads/1/3/1/1/131164355/8736632.pdfIn PDF document text
    • https://tedamitaza.weebly.com/uploads/1/3/0/7/130740371/wivaxemajebutin-kixipijikawe-tizomosoragovi.pdfIn PDF document text
    • https://cdn.sqhk.co/sudofeno/gcG18hi/balloon_arch_tutorial_easy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383695/normal_5fdd46dd7876f.pdfIn PDF document text
    • https://gimuloge.weebly.com/uploads/1/3/0/7/130775506/kimogiluxi.pdfIn PDF document text
    • https://cdn.sqhk.co/kojariwirip/jUt7Sje/vipiworotezoxidid.pdfIn PDF document text
    • https://sojimivur.weebly.com/uploads/1/3/4/8/134883767/3295046.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
    • http://xixitokap.rf.gd/99371306262.pdfIn PDF document text
    • http://kepujelibip.epizy.com/teamviewer_linux_command_line.pdfIn PDF document text
    • https://s3.amazonaws.com/dexodekelaseki/kivujibimukowon.pdfIn PDF document text
    • http://tasetexogop.epizy.com/tometu.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/ielts_reading_12_test_5_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/automobile_catalog_apk.pdfIn PDF document text
    • http://notijopozij.epizy.com/amulet_book_8_supernova.pdfIn PDF document text
    • http://tujefozumuresul.epizy.com/basic_piano_songs.pdfIn PDF document text
    • http://gorulilul.rf.gd/13767203598.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_off0000db6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6A 5640 bytes
SHA-256: 2ff28f94d9a5c74f312fd0003555370f00d97c3fc8931fc8c4ac5feda8538ba1
font_01_sfnt_off0000ee6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6A 10160 bytes
SHA-256: 40eac750499ad84a3c9e932f17dee884b76f18ec71e298bd560fce324eb1421b
font_02_sfnt_off0001111f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1111F 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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