Malicious PDF — malware analysis report

Static analysis result for SHA-256 d98105797f22aa88…

MALICIOUS

PDF

72.6 KB Created: 2021-02-28 17:42:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 16cad3a770a6dea8b3c8ba8a15f971c4 SHA-1: 8ce609eee69646ef2ee45d42566f662b3992e02f SHA-256: d98105797f22aa8899c371dbe91d6a30fbe13356e1db80733b2e2fb0d88f13c6
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/wix?keyword=real+estate+directory+rochester+mn In PDF document text
    • https://bomexufimewaw.weebly.com/uploads/1/3/4/5/134517434/vejiputip.pdfIn PDF document text
    • https://vemekejafor.weebly.com/uploads/1/3/4/0/134012611/zogipijulesem.pdfIn PDF document text
    • http://fukerijinexin.mygamesonline.org/dmv_audiobook_virginia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416811/normal_6006327566423.pdfIn PDF document text
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/7a2c6f.pdfIn PDF document text
    • https://jatowuwovusi.weebly.com/uploads/1/3/5/9/135981640/be5f7ee475.pdfIn PDF document text
    • http://raisinshq.club/iifa_awards_2018_full_show_480pacwoo.pdfIn PDF document text
    • http://choosemadam.site/plane_simulator_3d_mod_apk_happymod6fh20.pdfIn PDF document text
    • http://jakor.pro/mokosuwunaliperelurivorozi43k.pdfIn PDF document text
    • https://fupiledur.weebly.com/uploads/1/3/4/5/134527701/cfe3c3ccfea8e4.pdfIn PDF document text
    • https://retetozatinum.weebly.com/uploads/1/3/0/7/130775023/tumolajuzobuxi_zajukudede_ruvumilareb.pdfIn PDF document text
    • https://xabanemexe.weebly.com/uploads/1/3/4/4/134443602/mamasevodifo_nodofat_funigupepimud_lovakekewato.pdfIn PDF document text
    • https://sidedelozamuk.weebly.com/uploads/1/3/1/4/131482822/famar.pdfIn PDF document text
    • http://bobr.space/tuloramekawvxaxl.pdfIn PDF document text
    • https://lozusometuzasop.weebly.com/uploads/1/3/4/7/134741376/7468141.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416125/normal_6005f472c8a1b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mikesivu.rf.gd/best_tires_minivan_consumer_reports.pdfIn PDF document text
    • http://zimopup.myartsonline.com/8718165612.pdfIn PDF document text
    • http://ximagutetala.epizy.com/joseph_campbell_the_power_of_myth_amazon.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_off0000e02c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02C 5288 bytes
SHA-256: a2c586498354fd46ee54445732be977ef77260bb34a7deb00a0ade7bf79b9359
font_01_sfnt_off0000f207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF207 10384 bytes
SHA-256: 13d04a39fd1e1bbd16669d77b172fa572293ba587c9f43f18d38642a48faee3f