Malicious PDF — malware analysis report

Static analysis result for SHA-256 d03c193c1b543713…

MALICIOUS

PDF

142.3 KB Created: 2021-03-20 10:29:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d374f9fe9698d352af78b10c2ec45537 SHA-1: b031e6405721d45a8784d58b82dbdfe6d5702235 SHA-256: d03c193c1b543713a21315afc543f730f1b343b77375aad147e1010947b6dd93
156 Risk Score

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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://baarspo.ru/wix?keyword=your+first+100+million+pdf+dan+pena PDF link annotation
    • https://burekanokem.weebly.com/uploads/1/3/1/0/131069897/jasezowirow.pdfIn PDF document text
    • http://giocodigital.website/imperialismo_europeovtujj.pdfIn PDF document text
    • http://teksalle.xyz/vegan_recipes_breakfast_easyqxrsa.pdfIn PDF document text
    • http://xugafigipi.22web.org/what_is_project_x_lz.pdfIn PDF document text
    • http://normab-id.com/left_behind_series_book_10990wt.pdfIn PDF document text
    • https://sidunijutama.weebly.com/uploads/1/3/1/1/131163786/mazobo.pdfIn PDF document text
    • https://gaxiworet.weebly.com/uploads/1/3/1/4/131408942/wonovuzu.pdfIn PDF document text
    • https://ruvezidarumova.weebly.com/uploads/1/3/1/3/131380493/9801658.pdfIn PDF document text
    • https://pilonalamajavex.weebly.com/uploads/1/3/1/1/131164122/rajinimubufunep_pafamat_silofitabik_feropezuxiw.pdfIn PDF document text
    • https://dajikunizitawis.weebly.com/uploads/1/3/1/1/131163857/luwuwuludiri.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/29455536153.pdfIn PDF document text
    • https://s3.amazonaws.com/kimone/dell_r740xd_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/37906857420.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/68508918921.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/pokosapotarew.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/ui_automation_test_android.pdfIn PDF document text
    • http://jonizuxupofewow.rf.gd/needle_bearing_size_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/57261149493.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/bamawibitorugexubapox.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/border_design_for_school_reports.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
stream_002_off0001251d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1251D 67080 bytes
SHA-256: f811926fcfe0c6b0695db9e795236e1c1761b9c8a381114a573df865fa1b1c2e
font_01_sfnt_off0001ec4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EC4A 5344 bytes
SHA-256: 0e48ae2c18986c173608409131447b23d08cac603dbd524c13eae58efcfc0396
font_02_sfnt_off0001fe67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FE67 14040 bytes
SHA-256: dd639c693e75ba7185b2d1a650b6bff2c537b0b2d049ee3d6ee7037a0c9a8562

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