Malicious PDF — malware analysis report

Static analysis result for SHA-256 69195d07c72009f1…

MALICIOUS

PDF

83.8 KB Created: 2021-03-02 03:29:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: b8aaf5f5d6bc6e23d1adc89dbb2fc997 SHA-1: 0610643d9f56b140955d04e1f691a81abbacaeb0 SHA-256: 69195d07c72009f13fc68e99b8902c97390354f079ee372d85a10065dc9c6e0f
126 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a primary suspicious URL pointing to 'maypoin.ru'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host many links on disposable domains, a common tactic for distributing malicious content or conducting phishing campaigns. No scripts were extracted, but the presence of external URIs and the link farm nature of the document strongly suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/123?utm_term=oracion+en+el+espiritu+que+es PDF link annotation
    • https://cdn.sqhk.co/sirazisiluz/ggrvhbV/next_business_tycoon.pdfIn PDF document text
    • https://cdn.sqhk.co/jabisopomuxo/sCvqOgf/13760992016.pdfIn PDF document text
    • https://cdn.sqhk.co/dagozuwemep/SZ3gdNA/74812574050.pdfIn PDF document text
    • https://nazutusimeraj.weebly.com/uploads/1/3/4/8/134883567/gejiwoxunilida.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427282/normal_6012e305d04e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416796/normal_603140205a3c3.pdfIn PDF document text
    • https://cdn.sqhk.co/mirofifuba/jWDheji/swords_and_sandals_5_redux_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392867/normal_60164cd9a583a.pdfIn PDF document text
    • https://cdn.sqhk.co/samofetob/ajxifji/27277727754.pdfIn PDF document text
    • http://suvuxivenorum.mypressonline.com/dateline_the_other_side_of_paradise_summary.pdfIn PDF document text
    • http://xenalebosob.scienceontheweb.net/mumelime.pdfIn PDF document text
    • https://cdn.sqhk.co/dojagomudek/duKvUih/ultimate_fox_simulator_2_apk_download.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://s3.amazonaws.com/rikolesafuwofar/70924689327.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/britannia_industries_annual_report_2015-_16.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/fezodiwov.pdfIn PDF document text
    • http://sabixukavizom.myartsonline.com/what_is_the_difference_between_viral_and_bacterial_sore_throat.pdfIn PDF document text
    • http://gumomexad.onlinewebshop.net/totikoxumalavonazenumexaj.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/centrifugal_fan_types.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB77 4964 bytes
SHA-256: 8308aa5e393e59c19e9382f4bf151b9b9e6cf10389b65d26888e1f89dae362c7
font_01_sfnt_off00010c61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C61 11624 bytes
SHA-256: 0d2b7bba9b45f25bdd3f0389e430aac19e3c871beee8a91fe7b8389decdf3557
font_02_sfnt_off00013201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13201 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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