Malicious PDF — malware analysis report

Static analysis result for SHA-256 516fb157b9dbbc2c…

MALICIOUS

PDF

70.5 KB Created: 2021-02-18 22:30:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 422c492e4a3ee7ad788f6b4be21e6ee4 SHA-1: 9088e95ef1b9020d16ceee719d702685c8be4088 SHA-256: 516fb157b9dbbc2c46c386a11b2678b694f36538c89d924ea0b6e7024acc8213
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=aion+essencetapping+map+locations In PDF document text
    • https://dikemogegopur.weebly.com/uploads/1/3/1/4/131406608/dunafarag-fisazorido.pdfIn PDF document text
    • https://kitaterikobojim.weebly.com/uploads/1/3/0/9/130969176/4821836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465128/normal_60293a389b00f.pdfIn PDF document text
    • https://bisawovetazevel.weebly.com/uploads/1/3/4/6/134613631/luvufinuvoxujulet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484107/normal_6006513718528.pdfIn PDF document text
    • https://pamuguvijokogag.weebly.com/uploads/1/3/4/8/134883264/libezuxumo-geduwap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448991/normal_5feb4194992fe.pdfIn PDF document text
    • https://fologonalufofu.weebly.com/uploads/1/3/4/6/134694067/5387737.pdfIn PDF document text
    • http://malarusexomobaf.22web.org/free_video_maker_for_android_mobile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418000/normal_5fd3dcde3d886.pdfIn PDF document text
    • http://dobogoj.iblogger.org/61701677817.pdfIn PDF document text
    • https://jimurapixow.weebly.com/uploads/1/3/5/3/135399705/venigavitimofazeve.pdfIn PDF document text
    • https://gunagejosiva.weebly.com/uploads/1/3/0/7/130738835/5749476.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kulagotano.rf.gd/free_coreldraw_templates_for_brochures.pdfIn PDF document text
    • http://piwunutid.epizy.com/my_android_tablet_has_become_very_slow.pdfIn PDF document text
    • http://bipofixijanafuf.rf.gd/internet_manager_6._35_crack_indir.pdfIn PDF document text
    • http://soxosodazafu.epizy.com/kunubijimitusinonedoxug.pdfIn PDF document text
    • http://tuzagexesowojoj.epizy.com/cartel_cubano.pdfIn PDF document text
    • http://demuwesax.epizy.com/asus_rog_crosshair_vi_hero_nvme.pdfIn PDF document text
    • http://bojilukirifep.rf.gd/82171679272.pdfIn PDF document text
    • http://difadedox.rf.gd/baby_song_with_video_free.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_off0000d690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD690 5144 bytes
SHA-256: 9d9fbecaa7dbeaf97d8c6103c07b949ffdcb85d7bd9ec697a246857534722966
font_01_sfnt_off0000e805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE805 10596 bytes
SHA-256: 690165ada90942732ed18717da9d0532a2ff2ede38f8aefd5aa76df78e5d3177