Malicious PDF — malware analysis report

Static analysis result for SHA-256 13274e43cbefbfd4…

MALICIOUS

PDF

88.8 KB Created: 2021-03-21 05:20:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4cdb84ee3c972c1cc9660143231005c1 SHA-1: ca0f57a01525afe200136e70c04f5f985c7fc90c SHA-256: 13274e43cbefbfd41b7271e2e82608cf09ad460dcdc23169ce3c392c78768174
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/123?utm_term=latest+hair+changer+app PDF link annotation
    • http://pozesex.iblogger.org/palitotapozijil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426571/normal_603166428814f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461751/normal_5fe7257e3d18c.pdfIn PDF document text
    • http://fogubibiji.iblogger.org/fleck_5600_regeneration_time.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412570/normal_602dc7e871c07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388818/normal_60337cbb77133.pdfIn PDF document text
    • http://bezugunafagomup.22web.org/walter_benjamin_aura_essay.pdfIn PDF document text
    • http://vixemifojetinag.sportsontheweb.net/bofanuname.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409243/normal_5ff90ae08f578.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
    • https://s3.amazonaws.com/biwubeleba/dikajalogop.pdfIn PDF document text
    • http://bojonovaja.rf.gd/cambridge_igcse_combined_science_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/merefoderetatev.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/50818378131.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/admiralty_law_words.pdfIn PDF document text
    • http://poravilotizeve.epizy.com/14530464772.pdfIn PDF document text
    • http://saluwagasa.onlinewebshop.net/consolation_of_philosophy_book_1_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/64150116260.pdfIn PDF document text
    • http://gigitepusiligo.epizy.com/6190907939.pdfIn PDF document text
    • http://xorikefolober.rf.gd/how_to_write_references_in_apa_format.pdfIn PDF document text
    • http://sojufuka.atwebpages.com/what_is_a_conjunction_fanboys.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_off00011360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11360 4784 bytes
SHA-256: a91e9087b15e050c04fb5db6324f4c404ad404891394989c2503956b7bc3e887
font_01_sfnt_off00012391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12391 10624 bytes
SHA-256: 56269f4eb13c87ea23dc03bfe35359244759a77f7d4aa33318f677980860c61b
font_02_sfnt_off000147f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147F2 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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