Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8392513a99e3f0…

MALICIOUS

PDF

80.1 KB Created: 2021-03-04 05:35:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 697f3ff13ccc155054b6aec02a3d93f7 SHA-1: b9bcd9f71f082e3fcb6f1804a62399eca70d5dba SHA-256: 2c8392513a99e3f087d1c20e222bf0a55cf702b8ca515035d3a8f54ac83f5f6a
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged by ML classifiers and ClamAV as malicious, indicating a phishing or malware distribution attempt. The document body, though garbled, suggests a lure related to search engine results, directing users to potentially malicious domains for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://fokemale.ru/123?utm_term=how+do+you+clean+your+gas+fireplace PDF link annotation
    • http://duvejiwuxikon.getenjoyment.net/53099271862.pdfIn PDF document text
    • http://fineagencyy.com/17340440581pboch.pdfIn PDF document text
    • http://kusafomidufe.mywebcommunity.org/57108983505.pdfIn PDF document text
    • https://cdn.sqhk.co/fajaleniwa/EKUW4hf/stickman_ice_hockey_mod_apk.pdfIn PDF document text
    • http://siviveko.getenjoyment.net/43290829738.pdfIn PDF document text
    • https://cdn.sqhk.co/vujejanar/jrjb3wq/bombay_cat_characteristics.pdfIn PDF document text
    • https://cdn.sqhk.co/lexoxuxoluvi/1jhhihg/mergecraft_idle_merge_rpgle.pdfIn PDF document text
    • https://cdn.sqhk.co/xurinuwame/zsjejam/bepuxawizuburetix.pdfIn PDF document text
    • http://prizinsta24.space/sonic_adventure_dx_metal_sonic_storysudv3.pdfIn PDF document text
    • http://rowowevu.mypressonline.com/wugugukosujakekojupitije.pdfIn PDF document text
    • http://sputnews.com/best_guided_tours_of_europe_for_familiesag2vu.pdfIn PDF document text
    • https://cdn.sqhk.co/rufosopufu/I9dhfgd/alien_shooter_gift_codes_ios.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/xunuk2gpv5.pdfIn PDF document text
    • http://iranomics.com/99763992505glbh5.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
    • http://vigexosav.myartsonline.com/38982960307.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_off0000ee80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE80 5280 bytes
SHA-256: 5889d1ba372feb7c9d21282987d4ea374a55e41035083f06315de2463f8b9885
font_01_sfnt_off00010091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10091 10716 bytes
SHA-256: db4a65f46adb206ae8cefefa1da101aa3b0ed80758333e1f2ab290d421c1f478
font_02_sfnt_off000124f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124F5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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