Malicious PDF — malware analysis report

Static analysis result for SHA-256 5696ca431a341fec…

MALICIOUS

PDF

92.1 KB Created: 2021-05-18 01:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 052d2bcf68435823664f6067a350cdc1 SHA-1: 88ee7710f858b2ac9fded41de67b2b67569b6594 SHA-256: 5696ca431a341fec9b87d74f708201966fdce53b4de95524808367748e756a70
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a phishing or spam campaign. It contains a link farm with numerous external URLs, including one pointing to mezovuduw.ru, suggesting it's designed to redirect users to potentially harmful sites. The document body, though heavily obfuscated, appears to be a lure related to agricultural equipment sales.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://mezovuduw.ru/wb?keyword=john%20deere%206620%20combine%20for%20sale%20in%20ontario PDF link annotation
    • https://liletalezawo.weebly.com/uploads/1/3/4/5/134591830/doritokafumojub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486552/normal_5ffe87fd89690.pdfIn PDF document text
    • https://bezumovepefare.weebly.com/uploads/1/3/5/3/135337037/gisapimekopuza-jiraf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464052/normal_604347b262291.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378405/normal_6032e11ac1005.pdfIn PDF document text
    • https://butiriretife.weebly.com/uploads/1/3/2/6/132681404/fogapisa-jubilorilulumep-zotidogumodulux-biwuwa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448992/normal_602a253a4b2cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464877/normal_606d6683adbfc.pdfIn PDF document text
    • https://norofuzalugegok.weebly.com/uploads/1/3/4/8/134882219/woxobazo.pdfIn PDF document text
    • https://zugasunisozabij.weebly.com/uploads/1/3/4/7/134759734/xolufomal-folef-fetidav-namiwetimu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378405/normal_60446f1e69cad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467589/normal_6068e6c68a2b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459165/normal_600d2d06c175a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486552/normal_60369fe3cc18e.pdfIn PDF document text
    • https://xirejefeju.weebly.com/uploads/1/3/4/7/134723985/5394929.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465396/normal_5ffe493b3223e.pdfIn PDF document text
    • https://benodamefeju.weebly.com/uploads/1/3/5/3/135346815/19c29a.pdfIn PDF document text
    • https://kexezesokofu.weebly.com/uploads/1/3/3/9/133986719/koxopedepajulukek.pdfIn PDF document text
    • https://bezujopejot.weebly.com/uploads/1/3/1/6/131606295/8859370.pdfIn PDF document text
    • https://raponomipa.weebly.com/uploads/1/3/2/6/132681826/zogululamexa.pdfIn PDF document text
    • https://ralerafuzirepob.weebly.com/uploads/1/3/4/3/134386916/62a9431025.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/d1a545a0-9842-4418-8e41-f8449f8aaa0c/20394268644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bad7a496-86b3-4784-9e5a-704ef8777b8e/roku_2021_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19654f8e-0850-49b5-a8ff-4b86a27ae3e6/lozimetelizupub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4ed6136-5c04-49c7-bc66-b5734bdd91c2/us_postal_service_international_price_calculator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6912e4ae-e0f3-4eba-8b24-3cb2a69795ff/61031710433.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF6 5816 bytes
SHA-256: 2606a77ea707702aa6d97876895815fbe42969e78986e2e79e5a5e192946d2c0
font_01_sfnt_off0001238e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1238E 11416 bytes
SHA-256: 17d0e4dacf3f72e463233d95c04e9fa8511b962487af9d2e537348346ba327f6
font_02_sfnt_off00014ac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AC1 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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