Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb14cbf67b4dc7c…

MALICIOUS

PDF

71.6 KB Created: 2021-03-23 15:53:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: ccd1df922c026adda3407665760161c8 SHA-1: 3884135f78391da800737f0d23e5b19b0ba718bb SHA-256: 2eb14cbf67b4dc7ca8e117c18e739fb1e9f3c4c4b5e349837254a5bc7837b664
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are hosted on disposable domains and appear to be part of a link farm designed to attract traffic. The presence of a URL with a 'planet+fitness+free+membership+for+college+students' UTM term suggests a phishing or scam lure. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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
  • 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.
  • 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://pelibifir.ru/strik?utm_term=planet+fitness+free+membership+for+college+students PDF link annotation
    • https://suludizivot.weebly.com/uploads/1/3/1/3/131383823/4478562ced24e3.pdfIn PDF document text
    • https://cdn.sqhk.co/xikotoxerov/0gieZUB/k_h_cat_bed_warmer.pdfIn PDF document text
    • https://cdn.sqhk.co/jetirivotu/ja9PDEl/bio_inc_redemption_online.pdfIn PDF document text
    • https://bapudemajupi.weebly.com/uploads/1/3/1/4/131438294/matatog.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CKsihKb/40504930244.pdfIn PDF document text
    • https://zovezeko.weebly.com/uploads/1/3/4/6/134697242/nisimopadogiwa-kogegifakujikut.pdfIn PDF document text
    • https://cdn.sqhk.co/molodomo/Fnif6yq/46985921983.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/fRgevt9/mens_tie_dye_shirts_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/FrjhCXJ/luxanegetavidobigarej.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvazilu/nhaCBnA/rope_untangle_game.pdfIn PDF document text
    • https://cdn.sqhk.co/rubogomuweme/f6Jjdic/guidelines_for_covid-_19.pdfIn PDF document text
    • https://cdn.sqhk.co/puxolika/eZlic0N/jezilixuxetotefibolutew.pdfIn PDF document text
    • https://cdn.sqhk.co/damapegapi/jahhjue/medewudozusegesam.pdfIn PDF document text
    • https://fipufiradak.weebly.com/uploads/1/3/0/8/130813779/wafidinexi.pdfIn PDF document text
    • http://wibikezo.iblogger.org/20806409644.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/hp_smart_app_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/whirlpool_duet_sport_parts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/how_to_disable_car_alarm_without_key.pdfIn PDF document text
    • http://nemabufebuxabo.epizy.com/78166970131.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/11583470151.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/76488290721.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_off0000d77e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77E 5712 bytes
SHA-256: 0e8e8faeba6543a0e438832c0d39597ac2c415cecbe1d93b9bed8d4a031c60c2
font_01_sfnt_off0000eabf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEABF 10660 bytes
SHA-256: ffc34a16a4d7542a056ebe5def438872d546f59b620e7e44c7ee7902a46ae5a1

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