Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d7d2a98938fd723…

MALICIOUS

PDF

83.3 KB Created: 2021-05-01 02:02:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: c62fd030ce4e367824275be1ac8e1a69 SHA-1: c091fc1bfc0a58825d1631505d01ca8578cf4956 SHA-256: 0d7d2a98938fd723e4543bbe31f6e9005a6834f6a9c5b5a890e631e5815b8930
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, appears to be a lure related to drawing tutorials, which is likely a pretext to drive traffic to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/strik?utm_term=how+to+draw+face+for+beginners+easy+sketches PDF link annotation
    • https://sirunolova.weebly.com/uploads/1/3/5/3/135303996/4950269.pdfIn PDF document text
    • https://cdn.sqhk.co/nugizape/hc3CEul/reverso_contexto_spanish.pdfIn PDF document text
    • https://ruwatavefi.weebly.com/uploads/1/3/4/7/134704280/pisegunigoxuvozojeji.pdfIn PDF document text
    • https://fowawuxubave.weebly.com/uploads/1/3/4/7/134759807/5483031.pdfIn PDF document text
    • https://cdn.sqhk.co/nananava/qjeihn2/lebara_mobile_jeddah_office.pdfIn PDF document text
    • https://nebuxegakox.weebly.com/uploads/1/3/4/4/134404726/damanijobolubut.pdfIn PDF document text
    • https://cdn.sqhk.co/getabemuto/ZjaicyR/rijofisife.pdfIn PDF document text
    • https://cdn.sqhk.co/dawupana/fRCpMjb/96380898119.pdfIn PDF document text
    • https://nabaladeso.weebly.com/uploads/1/3/1/4/131438379/5eedd3151f05a.pdfIn PDF document text
    • https://mijutadozas.weebly.com/uploads/1/3/4/5/134590660/kigebapujabopi.pdfIn PDF document text
    • https://towodoruzaxigol.weebly.com/uploads/1/3/6/0/136050186/2232080.pdfIn PDF document text
    • https://dukuvelawabuze.weebly.com/uploads/1/3/0/9/130969723/vojetaxajubewa.pdfIn PDF document text
    • https://zolidejowifaw.weebly.com/uploads/1/3/5/3/135313364/1175045.pdfIn PDF document text
    • https://xebigami.weebly.com/uploads/1/3/4/6/134661154/adca9c33.pdfIn PDF document text
    • https://mipedurekarano.weebly.com/uploads/1/3/5/3/135321071/geboguz.pdfIn PDF document text
    • https://mapatujil.weebly.com/uploads/1/3/1/4/131454051/tuvasimakilenebod.pdfIn PDF document text
    • https://pezolorizogor.weebly.com/uploads/1/3/4/6/134692003/xogewur_basedafobetut.pdfIn PDF document text
    • https://jovanifapekiba.weebly.com/uploads/1/3/0/7/130739678/73fb9ad5.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
    • https://383fd46b-cc41-47b7-9379-19c19d7bb1fe.filesusr.com/ugd/81c43a_0ed1148d9afd4cab8b501ee181425fb3.pdf?index=trueIn PDF document text
    • https://3c4962d9-41f7-4f14-8396-dad57cc8de20.filesusr.com/ugd/a2de88_e7182df0cfa0446bb5494556b9734c54.pdf?index=trueIn PDF document text
    • https://6f12065f-c45d-410c-b048-6ec23fb2b810.filesusr.com/ugd/02ccf7_bdfc2fb7697040e18e4637609b2d0f70.pdf?index=trueIn PDF document text
    • https://d6d3a1c5-32ce-46e9-ae92-c5b8d84d65d9.filesusr.com/ugd/a3b54b_987606e37d55483689dbae508f9a7fc5.pdf?index=trueIn PDF document text
    • https://d62ff7d9-aefc-4ab8-8cdf-af38868aea16.filesusr.com/ugd/54b9a1_94b01b7f14d64361980134c2c1d76b3f.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB8 5400 bytes
SHA-256: 1711ef562668e4859581973c3128d12e09d0886c5dfa684849cacf05cd8882c0
font_01_sfnt_off00010e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E1E 10384 bytes
SHA-256: 5e93cd5147f8fe0906fa393203da72e6f39c1bfd68c4c2c53c1c9cbcbbaf33f1
font_02_sfnt_off00013168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13168 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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