Malicious PDF — malware analysis report

Static analysis result for SHA-256 96fdced6a678cc3b…

MALICIOUS

PDF

78.3 KB Created: 2021-05-09 23:43:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1b2ec5b4a6c20092032356927c7447d1 SHA-1: 94187f7d072898ec5511397da82365dce5e9a7ca SHA-256: 96fdced6a678cc3b40f08397a60f9c350262038ee927c1ccbfdfed2968bf1c4f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://resalured.ru/strik?utm_term=reddy+heater+propane+parts PDF link annotation
    • http://gugibugud.mygamesonline.org/az_nvdelem_500_fogsa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369506/normal_600305fd27446.pdfIn PDF document text
    • http://bitejes.iblogger.org/animal_name_list.pdfIn PDF document text
    • http://mateguwokalidub.getenjoyment.net/calendario_escolar_2020_sep_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475562/normal_604865eaa2c34.pdfIn PDF document text
    • http://goligofalu.medianewsonline.com/bible_quiz_genesis_chapter_22.pdfIn PDF document text
    • http://bafedudovodamo.medianewsonline.com/83445822634.pdfIn PDF document text
    • https://fowaloxew.weebly.com/uploads/1/3/4/8/134881160/16df78daf5354a.pdfIn PDF document text
    • http://fulukegoror.getenjoyment.net/virowojuliker.pdfIn PDF document text
    • http://gowinugivepogo.22web.org/39742935686.pdfIn PDF document text
    • https://losiweso.weebly.com/uploads/1/3/1/3/131380476/fabaluvunavuja_vubibu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387031/normal_60214875efc88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476429/normal_6059bc1362e5b.pdfIn PDF document text
    • https://beroloxubotuze.weebly.com/uploads/1/3/0/7/130775422/bikoxovakog.pdfIn PDF document text
    • http://milesatel.mygamesonline.org/how_to_write_a_fiction_synopsis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369776/normal_6014e24111eee.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://sidumekubasib.epizy.com/84404436176.pdfIn PDF document text
    • http://vomewudige.atwebpages.com/majefezisab.pdfIn PDF document text
    • http://poduzamilikuki.rf.gd/somosipoxuriputuga.pdfIn PDF document text
    • http://zujetisapapido.rf.gd/arduino_mega_2650_datasheet.pdfIn PDF document text
    • http://fidawakuxut.epizy.com/shilpa_similar_waliye_song.pdfIn PDF document text
    • http://dukojalili.rf.gd/felewowisabezolegagu.pdfIn PDF document text
    • http://gisesufuxezemud.epizy.com/esophageal_cancer_powerpoint_template.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_off0000e85c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85C 4864 bytes
SHA-256: 921d17a91270ced4c3b7f345cd70d889a8664d235fab284edeab7823944c2053
font_01_sfnt_off0000f8e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E0 10664 bytes
SHA-256: 36b3092ea83cca7379bd28c42d108c1da82206681e893d40dda2882646e2f846
font_02_sfnt_off00011d7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D7A 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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