Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a4658fe2912b3f6…

MALICIOUS

PDF

80.0 KB Created: 2021-04-03 03:46:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 87ce51283585eceba5e285620ca4390b SHA-1: 9778a37451d2097253ef2e39847b0e12c53137e4 SHA-256: 1a4658fe2912b3f6a368cb66e8c0e00822003248a520a2dbc4817fc6471bc719
144 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. It uses a password-protected-archive lure. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/123?utm_term=alien+shooter+2+the+legend+pc PDF link annotation
    • https://cdn.sqhk.co/josipinu/gehiMgh/kukasebares.pdfIn PDF document text
    • https://cdn.sqhk.co/molavagew/ja1IjgC/migakalut.pdfIn PDF document text
    • https://cdn.sqhk.co/barugogip/ngeeSjd/photo_collage_creator_for_windows.pdfIn PDF document text
    • http://batezelokev.iblogger.org/61868945725.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
    • http://tabifewegijip.epizy.com/kidusojuwulogekodatipi.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/android_bypass_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/saxubotuladiwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11708f4e-4507-4460-9abc-b84bea96a718/rifetobonuse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d394557-261b-4011-831e-470047842cc9/how_hard_is_server.pdfIn PDF document text
    • http://lavodusepigixu.rf.gd/rominilunava.pdfIn PDF document text
    • http://tunazafagid.epizy.com/kisuri.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/abbott_freestyle_lite_meter_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/kovetisi.pdfIn PDF document text
    • http://reditab.epizy.com/rewadofawajonilugudevesin.pdfIn PDF document text
    • http://kizilobizewepog.epizy.com/ab_initio_etl_books.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/46569573880.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/42661816823.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_off0000ec2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2A 5032 bytes
SHA-256: 2ff865260549ecd03ead44c9d954b25766514ef666661f948a704a80e8251b37
font_01_sfnt_off0000fd41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD41 11608 bytes
SHA-256: 11b900baaac7f2c39a547376e6456835311e9d90557fc985b0461fb6025a25f7
font_02_sfnt_off00012481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12481 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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