Malicious PDF — malware analysis report

Static analysis result for SHA-256 7841ebac29219303…

MALICIOUS

PDF

83.3 KB Created: 2021-03-23 15:22:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 761b80904968e098f8b8bd280eb78159 SHA-1: e2413b04480a062a82efa89d03062bb9eba8620c SHA-256: 7841ebac29219303e5005423f28d8413af9da4086373c46a0b7d76479716666f
136 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it's a phishing lure, specifically using an image to redirect users to a malicious URL. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing campaign designed to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://midufefew.ru/wix?keyword=consent+of+the+governed+example+sentence PDF link annotation
    • http://timedezalug.iblogger.org/asus_rt-ac87u_ac2400_dd-wrt.pdfIn PDF document text
    • http://wogamilip.iblogger.org/agrgation_dfinition_informatique.pdfIn PDF document text
    • http://soldonlittleton.com/xafevojifamevoregumabxjnoe.pdfIn PDF document text
    • http://mnogoturov.com/799009377793zf9x.pdfIn PDF document text
    • http://hamsterbig.com/xiwaxakafetesorrmy9.pdfIn PDF document text
    • https://ramipataxeki.weebly.com/uploads/1/3/4/4/134483057/xitek_mijoledoru_xurujuzaje_fepedepage.pdfIn PDF document text
    • http://moneyindia.site/bugepovemufunodadopizubtalbj.pdfIn PDF document text
    • https://fatatarulawug.weebly.com/uploads/1/3/4/4/134474158/8496536.pdfIn PDF document text
    • https://debivozujorebol.weebly.com/uploads/1/3/0/8/130813616/3494528.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/dibujando_con_el_lado_derecho_del_ceh50y9.pdfIn PDF document text
    • https://rubusabulolow.weebly.com/uploads/1/3/5/3/135326577/7150890.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/lixuzo/solidworks_2017_free_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/78322652763.pdfIn PDF document text
    • http://fovuwikotunepam.rf.gd/zedegexif.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/best_tippmann_a5_barrel_upgrade.pdfIn PDF document text
    • http://daxotumolurotaw.rf.gd/android_fragmenttransaction_example.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/what_is_crp_blood_test_high.pdfIn PDF document text
    • http://kovolotog.epizy.com/briquette_making_business_plan.pdfIn PDF document text
    • http://xakitum.epizy.com/biology_book_12th_class.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f87a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87A 5460 bytes
SHA-256: 45495016eb362dfc78e4c5703e1717ad68386d7bfd9be72209f2348295175784
font_01_sfnt_off00010af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF0 11316 bytes
SHA-256: d73cdb06068825fdc7f90af98c480ed0bb74ebd0a72f38d3b475318f18d677a7
font_02_sfnt_off0001312d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1312D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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