Malicious PDF — malware analysis report

Static analysis result for SHA-256 270c629a6c55ac20…

MALICIOUS

PDF

79.2 KB Created: 2021-01-29 20:05:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 1e894e456d8aa5e211f225703d41afae SHA-1: 2bc708cb70790df2e842e383764bb006ea9ba393 SHA-256: 270c629a6c55ac20513b6d2801a1c71de0667f56594de475d9add3e6f99a18a1
226 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam, using lures related to lottery winnings or parcel deliveries. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://jottigo.ru/123?utm_term=aflac+hospital+indemnity+plan+wellness+benefit+claim+form PDF link annotation
    • http://selozufuwadapuw.66ghz.com/create_new_label_template_in_word_2010.pdfIn PDF document text
    • https://fetevemukimagon.weebly.com/uploads/1/3/4/8/134896640/guwaxuvag_nopemutikugopil_guvikixijuwe.pdfIn PDF document text
    • https://ziriponu.weebly.com/uploads/1/3/2/6/132696112/1450451.pdfIn PDF document text
    • https://mevajivikupewog.weebly.com/uploads/1/3/0/7/130775189/vezopirekafimiwom.pdfIn PDF document text
    • http://goduvide.22web.org/10979689880.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/mopowasamagez.pdfIn PDF document text
    • https://fizegebukuri.weebly.com/uploads/1/3/1/4/131453213/d45249c850c.pdfIn PDF document text
    • https://nobobigo.weebly.com/uploads/1/3/4/4/134403715/jolikuxozepeg.pdfIn PDF document text
    • https://buxogenawake.weebly.com/uploads/1/3/5/3/135385170/ladanawenevo.pdfIn PDF document text
    • https://gewujamagig.weebly.com/uploads/1/3/5/3/135339218/jaketifu-jujosovir-kiluxojotunida-lepisep.pdfIn PDF document text
    • https://jabibodusap.weebly.com/uploads/1/3/2/6/132681053/fogidekewoso.pdfIn PDF document text
    • https://wamogulaforuxi.weebly.com/uploads/1/3/0/8/130874075/kusobasabaxazukure.pdfIn PDF document text
    • https://panebafizi.weebly.com/uploads/1/3/4/3/134365464/8082174.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/lebejos/51972938784.pdfIn PDF document text
    • http://fisuzes.epizy.com/xenupafotum.pdfIn PDF document text
    • http://kixavukuwowaz.rf.gd/zufazidifesefe.pdfIn PDF document text
    • http://kixixiwibatogit.epizy.com/counter_strike_apk_apkpure.pdfIn PDF document text
    • http://xalimelipuv.rf.gd/10663307888.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/centrale_sans_condensed.pdfIn PDF document text
    • http://lorasis.epizy.com/beholder_game_free_android.pdfIn PDF document text
    • http://kebafitesulodu.epizy.com/honda_hrv_2000_manual.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_off0000f4a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A7 5716 bytes
SHA-256: a372a57bf8be45e5fbc73df94147a785637f6480a02cb343553dac7e27af3162
font_01_sfnt_off00010809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10809 10752 bytes
SHA-256: cf1d95f2a2f0192c5f548ec4b1b491df86ccd2fc8bdcef9b512b712ebee56b0f