Malicious PDF — malware analysis report

Static analysis result for SHA-256 f07549e81269573b…

MALICIOUS

PDF

84.5 KB Created: 2021-03-05 02:16:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ab15a1c9ae8e5eaf613fba6a7a197408 SHA-1: 18b7cdc10c68b72379a9c8a15c8343dab6bca304 SHA-256: f07549e81269573b2f1452de6121695aaee59a6a2ee7116bb5f3e52445eb13bd
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body contains a deceptive lure related to a child's health, directing the user to a suspicious URL. This suggests a phishing attempt to trick users into visiting a malicious site, likely to download further malware or steal information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/award?keyword=rash+on+my+child%2527s+cheeks PDF link annotation
    • http://torchqbfl.fun/45844279547aei5h.pdfIn PDF document text
    • http://yandex-delivery.cc/barbie_girl_songs_freep5swt.pdfIn PDF document text
    • http://fojozefamofu.22web.org/pexuvunasotef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474448/normal_6017be6a3add1.pdfIn PDF document text
    • http://jidapuxedepu.medianewsonline.com/78061039666.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416796/normal_5ff0880328b33.pdfIn PDF document text
    • http://turosofatilez.iblogger.org/78404687675.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443578/normal_60337cc5322b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495391/normal_5fec530a7d98c.pdfIn PDF document text
    • http://nejevefivi.mypressonline.com/60479530809.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://renezaw.rf.gd/21749644455.pdfIn PDF document text
    • https://f74ea38a-ab8d-49a0-8d31-9a1d7ce64423.filesusr.com/ugd/5ceade_bd30ed82a0e14e4b8eaabf8d61fcb2cf.pdf?index=trueIn PDF document text
    • http://zalezir.epizy.com/convex_lens_image_formation_cases.pdfIn PDF document text
    • http://lopusewagini.epizy.com/62929530582.pdfIn PDF document text
    • http://varoniwarovez.rf.gd/36871032037.pdfIn PDF document text
    • http://lilepav.rf.gd/19071192789.pdfIn PDF document text
    • http://kepagewav.atwebpages.com/guxexitesekelakekewazomej.pdfIn PDF document text
    • https://3e1af3dc-cf37-4f58-935d-0a6065bc5ce9.filesusr.com/ugd/3ca236_6980bafa6b39493496a105073fb3b972.pdf?index=trueIn PDF document text
    • http://vilepobafomunow.atwebpages.com/56240618024.pdfIn PDF document text
    • http://botawaxugeb.epizy.com/ziparafutelipakerasulona.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F3F 5292 bytes
SHA-256: 41f1a4320f006f2480f4bbb6a2f711a6c21683e3375920f791bdef12371d448a
font_01_sfnt_off0001212a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1212A 10336 bytes
SHA-256: 1d3c5d2c4f74c36f16743521e3df5c5e438ac8fd1bc244d754e438206d4dffc0

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