Malicious PDF — malware analysis report

Static analysis result for SHA-256 48dc1d403ca069be…

MALICIOUS

PDF

118.5 KB Created: 2021-02-13 03:07:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0b7689b145f7651dedd782ab68c787c7 SHA-1: ce49eda6ea2643e5e3a85f6aadbd104daf3926e4 SHA-256: 48dc1d403ca069be39da878987b281311d082c898d1cd5dfcb90dd46b8183a55
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, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. It contains numerous external links, many hosted on disposable domains, designed to lead users to potentially malicious content. The ClamAV detection and ML classifier further support its malicious nature, suggesting it is a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://leonvi.ru/wix?keyword=the+price+is+right+episode+guide+wiki PDF link annotation
    • https://rifijilaguselud.weebly.com/uploads/1/3/4/8/134846829/kalegabivibuzexaji.pdfIn PDF document text
    • http://kozevoviwepok.iblogger.org/womutadaponaxi.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebililofo/jiihGhf/battle_of_boston_hockey_twitter.pdfIn PDF document text
    • https://wivozodibadire.weebly.com/uploads/1/3/0/7/130775536/1864676.pdfIn PDF document text
    • https://jitebogegamoma.weebly.com/uploads/1/3/4/7/134761197/dojusozatan_zasetivube_zadokubas_gesovolagumawe.pdfIn PDF document text
    • https://bomejafir.weebly.com/uploads/1/3/4/7/134725936/mezimerirote-towidu-vorejet.pdfIn PDF document text
    • https://cdn.sqhk.co/falupuvevore/oHgjhid/linkin_park_new_album_2020.pdfIn PDF document text
    • https://dijajogid.weebly.com/uploads/1/3/0/8/130874349/7553061.pdfIn PDF document text
    • https://xikigojajutu.weebly.com/uploads/1/3/4/3/134385057/jidole.pdfIn PDF document text
    • https://cdn.sqhk.co/xobakidanav/hanjcXA/carmageddon_max_damage_trophy_guide.pdfIn PDF document text
    • https://dimavuvinidet.weebly.com/uploads/1/3/1/3/131397938/paveredakakire.pdfIn PDF document text
    • http://disukikobofug.22web.org/2019_movies_tamil_movies.pdfIn PDF document text
    • https://waperimawomexav.weebly.com/uploads/1/3/4/7/134733778/3414453.pdfIn PDF document text
    • https://wupanotowi.weebly.com/uploads/1/3/1/4/131406855/zolimi.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puwokamavureme.rf.gd/14792914015.pdfIn PDF document text
    • http://nimunofat.epizy.com/61213926066.pdfIn PDF document text
    • http://jufomotapi.epizy.com/general_knowledge_quiz_hard_with_answers.pdfIn PDF document text
    • http://muwadobekele.rf.gd/gixabanaramovabu.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00016530.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16530 8164 bytes
SHA-256: a15873a8363934fb3cd0baf2eb8313ed03a65ab369c9e6e5831f8acb1d39e61d
font_00_sfnt_off00014038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14038 5612 bytes
SHA-256: 3d7b4585260cc387b51fcf6870a2ef18a3b688233aa0a034a8d988c9d876dbc9
font_01_sfnt_off0001537e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1537E 5196 bytes
SHA-256: ac1cecbb1ee80b0a3b0d629b27198716912df3c225eb01f642d61e4145965eee
font_03_sfnt_off00017bc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17BC0 19028 bytes
SHA-256: 25f842f7c37cd70f0acea830316752dfc7da3d5283ce40733a02413bafebf8de
font_04_sfnt_off0001b278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B278 17096 bytes
SHA-256: 5aaaf23901a74d8b5fb8e95403a5d7b9e0cef04f8953296f961b3abfa45511fd

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