Malicious PDF — malware analysis report

Static analysis result for SHA-256 132d7e87f24841d4…

MALICIOUS

PDF

70.2 KB Created: 2021-03-25 18:14:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 253c6bc7d42af69717de66c8e513ae09 SHA-1: 92a0d4f162e3c8069b63dd7a6739564aa28783a5 SHA-256: 132d7e87f24841d4b106bbc58cd57c1f116b431d8a30f14f1bf795e02401f291
206 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. It uses a callback-phone (TOAD) lure. 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 0.9991

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://lozipotod.ru/wix?keyword=manhattan+college+orientation PDF link annotation
    • https://cdn.sqhk.co/nifijagik/clqAxrK/mabizidopi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490936/normal_5fe89efeaea5c.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/rjaghhn/xolezo.pdfIn PDF document text
    • https://fojokelimavame.weebly.com/uploads/1/3/4/7/134713907/7084315.pdfIn PDF document text
    • https://cdn.sqhk.co/fatepotax/ubagcig/benubexati.pdfIn PDF document text
    • https://pinagoremomaj.weebly.com/uploads/1/3/0/7/130738806/jalesosukaporuv-revat-jatimizivo.pdfIn PDF document text
    • https://mapogukokerezat.weebly.com/uploads/1/3/5/9/135987870/gutaxukeneza-dosul-nikukonekago-nukekumuru.pdfIn PDF document text
    • https://wilulesutazi.weebly.com/uploads/1/3/3/9/133997377/905b1aa.pdfIn PDF document text
    • https://cdn.sqhk.co/wizokawoxo/jighggq/andy_mcnab_audio_books_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/zufosupiz/fgdghA8/set_background_image_programmatically_android.pdfIn PDF document text
    • https://cdn.sqhk.co/liramesot/0hbi7ge/video_chat_with_strangers_best_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409606/normal_5fd15209c032a.pdfIn PDF document text
    • https://kewekekonuv.weebly.com/uploads/1/3/4/7/134732265/2939886.pdfIn PDF document text
    • https://gerugufudob.weebly.com/uploads/1/3/4/8/134869234/b1d7b498036.pdfIn PDF document text
    • https://cdn.sqhk.co/xeloxilava/VlLNgj6/chinese_zodiac_year_of_the_rabbit_1999.pdfIn PDF document text
    • https://cdn.sqhk.co/radofufalam/NEhggel/borenej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387919/normal_604ce2052bf40.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/jjidije/police_motorbike_traffic_rider.pdfIn PDF document text
    • https://beburasitowetu.weebly.com/uploads/1/3/0/9/130969608/zaxidebezagodozopo.pdfIn PDF document text
    • https://buwolerujagelav.weebly.com/uploads/1/3/4/5/134580081/dufomedura.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/38af1c6c-80a4-4542-9b96-62a9748719b0/why_is_creativity_important_in_sport.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04eb8a58-967a-4ae8-aaca-fc42eed4e3a7/andrew_loomis_creative_illustration_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eb69a96-4a28-48b5-aa93-e7051046bcc0/20142126807.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63bb0125-d295-4c88-9db5-b56fcf46694d/74947109522.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e636e83f-ced7-4ee0-990b-80df8dd9ac06/paint_dot_net_open_gif.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_off0000d50e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD50E 4888 bytes
SHA-256: 1af73ceddedf59e106874bda5f08fcf5c5b2edbaf56d4bf530de6733a11053ce
font_01_sfnt_off0000e5b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B3 11088 bytes
SHA-256: 0c85d7f608d46499bd301a865f8f76ded501e4347ecc34ff518a3e277e2b98f3