Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fd6a6bd6ae679e1…

MALICIOUS

PDF

78.4 KB Created: 2021-05-16 18:22:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 13e6c412c8c242de5665f8016fcbd0db SHA-1: 80c288c31dc96decb0e969aaa5a4a46b5e381e18 SHA-256: 1fd6a6bd6ae679e107cb8a7680e50662b756b3be51425c5cb077bb754f6fe5ac
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by heuristics as an external URI and an embedded URL. The ML classifier and ClamAV detection strongly indicate maliciousness, classifying it as a phishing trojan. The embedded URL likely serves as a lure to a malicious site, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/strik?utm_term=jvc+mini+dv+camcorder+repair PDF link annotation
    • http://mewajopu.22web.org/center_of_gravity_method.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501231/normal_6015ff3e6b36c.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/how_to_change_a_brother_toner_cartridge.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/analtica_web_2._0_avinash_kaushik_espaol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451028/normal_5ff3b8155d4b2.pdfIn PDF document text
    • http://gibafafe.22web.org/behavioral_finance_thesis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461505/normal_6026ab6577086.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/leteraxewe/hello_tune_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/kuxizedotunexi.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/12260318584.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/84162245466.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/wizewat.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/15151695320.pdfIn PDF document text
    • http://mafevela.rf.gd/68531821076.pdfIn PDF document text
    • http://gotenekopibijo.epizy.com/69433310226.pdfIn PDF document text
    • http://pogetowem.onlinewebshop.net/naomis_room_book_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/sujekawagibunonotorefid.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/how_to_read_z_score_from_normal_distribution_table.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/garazuve.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/bukojipoxiru.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_off0000e851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE851 4768 bytes
SHA-256: 20dcc1c193e4c6b32792510271f1bd43c57297278b9bb09bc348c69331042d91
font_01_sfnt_off0000f85a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85A 11256 bytes
SHA-256: e95d79b9639917c434259d58d21a0295cbb75c0b6cad490ca360ead0a426827e
font_02_sfnt_off00011e7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E7F 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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