Malicious PDF — malware analysis report

Static analysis result for SHA-256 080d124e5b1d14f1…

MALICIOUS

PDF

74.2 KB Created: 2021-03-25 04:01:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 6b3f73e0f3cdb8f4eac0b57484dac9d6 SHA-1: 10cf2d6a5be36536b646ac5180a396a0ae6a9b6e SHA-256: 080d124e5b1d14f1fd3e354da87597b8eb6ca006dd86eb0c225a5ba78da7c2c5
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://soxebez.ru/award?keyword=three+column+cash+book+exercises+pdf PDF link annotation
    • http://oyuncuxx.com/bike_race_pro_hackso82wl.pdfIn PDF document text
    • https://zamidagotef.weebly.com/uploads/1/3/1/4/131453459/d75393d94fe.pdfIn PDF document text
    • http://kraftmann.su/shelterlogic_greenhouse_instructions8lbbo.pdfIn PDF document text
    • https://mawoluzapulumar.weebly.com/uploads/1/3/6/0/136082117/ridided_rulafozawo_fojur_navepabub.pdfIn PDF document text
    • https://jejaxeka.weebly.com/uploads/1/3/0/7/130739175/nibojab-zineso-mugamotak-zexijumajusikiv.pdfIn PDF document text
    • https://dorijalasenotom.weebly.com/uploads/1/3/5/3/135327318/xobitujikaxapa.pdfIn PDF document text
    • https://jabudebixeref.weebly.com/uploads/1/3/4/3/134398441/lekofugitowepajenobu.pdfIn PDF document text
    • https://pisesiwez.weebly.com/uploads/1/3/1/4/131453260/c3da1bf9a.pdfIn PDF document text
    • http://20970907.net/kugedarbjwo.pdfIn PDF document text
    • http://zahlungsservice-ch.site/29190930466qo81l.pdfIn PDF document text
    • http://requiredjokblog.com/473011689928h428.pdfIn PDF document text
    • http://getcabinets.xyz/510823880862qq49.pdfIn PDF document text
    • https://ruvogoxilukab.weebly.com/uploads/1/3/2/8/132813998/8933696.pdfIn PDF document text
    • http://trixy-matrix.space/delonghi_capsule_ceramic_heater_1800w_reviewv9cq8.pdfIn PDF document text
    • https://memudodonimik.weebly.com/uploads/1/3/1/4/131406547/vonagidifewajijokada.pdfIn PDF document text
    • http://sungo1.space/bivapetid70grk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/bible_app_reviews_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/cheat_india_movie_all_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/icon_game_answers_pack_24.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_off0000e330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE330 5616 bytes
SHA-256: fe632718e260fd99fb364f88399d5bf67bacac593c0fa8b447647fb50f08a468
font_01_sfnt_off0000f619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF619 11080 bytes
SHA-256: 86ab2623ff3045776ba809c3f3ccca8f2d8d034f13ec90841f066f5497ed27b7

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