Malicious PDF — malware analysis report

Static analysis result for SHA-256 e69f92dfcdb99d5a…

MALICIOUS

PDF

77.7 KB Created: 2021-03-31 06:33:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ffe0f111ad56d08b2e454e5d5fd06c73 SHA-1: 73196f7cb6c447d0d944363c29f44a0f881d51ad SHA-256: e69f92dfcdb99d5aca658a9228f8688ab82001a8a7e3caeae28739c2e01efd92
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by both ML classification and ClamAV, flagging it as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting it functions as a link farm. The primary purpose appears to be directing users to other potentially malicious or SEO-manipulated content, rather than containing a direct exploit or payload within itself.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/award?keyword=supply+chain+and+logistics+management+made+easy+pdf PDF link annotation
    • https://javaredulag.weebly.com/uploads/1/3/4/6/134611390/1458495.pdfIn PDF document text
    • https://josudumebumokix.weebly.com/uploads/1/3/4/0/134040650/f3cce1cbd087ea.pdfIn PDF document text
    • https://tatisosef.weebly.com/uploads/1/3/5/3/135333589/sasivofitele.pdfIn PDF document text
    • https://gumakamatiz.weebly.com/uploads/1/3/4/6/134600955/1a5fb92.pdfIn PDF document text
    • https://divewamekavese.weebly.com/uploads/1/3/1/8/131860060/3144a2d4e33ed.pdfIn PDF document text
    • https://nunibuzobaga.weebly.com/uploads/1/3/0/7/130740367/sujuvobu-gunixazufe-vanonononilun.pdfIn PDF document text
    • https://fifubinagate.weebly.com/uploads/1/3/4/8/134854053/8587467.pdfIn PDF document text
    • https://vunukufe.weebly.com/uploads/1/3/4/6/134640969/244858608c3cda.pdfIn PDF document text
    • https://vipapixamez.weebly.com/uploads/1/3/0/8/130814430/29c5bdba.pdfIn PDF document text
    • https://futubopekele.weebly.com/uploads/1/3/4/6/134652885/4701792.pdfIn PDF document text
    • https://simidolipuxemit.weebly.com/uploads/1/3/4/4/134486986/fesowumugizuli_xugod_takerideda.pdfIn PDF document text
    • https://mawosamaretezij.weebly.com/uploads/1/3/4/8/134860838/4090375.pdfIn PDF document text
    • https://nofuwotepilob.weebly.com/uploads/1/3/1/6/131636733/63a6dd.pdfIn PDF document text
    • https://jazakeramexevam.weebly.com/uploads/1/3/4/6/134615015/burujawu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d6504552-49b0-4b7d-b1ff-94f9e1082b83.filesusr.com/ugd/1f0558_d62b6edd57d74ee9bc7e1891eab18a18.pdf?index=trueIn PDF document text
    • http://fuxufotab.epizy.com/84736155869.pdfIn PDF document text
    • http://zajunevoza.epizy.com/river_island_size_guide_ladies.pdfIn PDF document text
    • http://pupekafujobuda.rf.gd/ukulele_songs_somewhere_over_the_rainbow_easy.pdfIn PDF document text
    • http://lejafutizi.epizy.com/capitana_marvel_comic.pdfIn PDF document text
    • https://bc260b4e-efc2-469d-9102-9c7234992d76.filesusr.com/ugd/b1b3ad_c519140094e948cb87f84595efba33d8.pdf?index=trueIn 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_off0000f15d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15D 5676 bytes
SHA-256: 0a469972d0f4362d1827afb0172be6ba948b92e7dfcb9f0e690c880646a92ebc
font_01_sfnt_off00010498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10498 10756 bytes
SHA-256: 8122b07ca0c346dcb4a09540a16377eff727176030a8dae3c5fb8535ff58c829

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