Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3b6943a529fa722…

MALICIOUS

PDF

83.6 KB Created: 2021-03-23 08:02:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bfbde2681817a1cd53a8c96f3f768a98 SHA-1: f4052bfd446371e407c29d2da4e4c90cacc196ef SHA-256: d3b6943a529fa722f56b5b8ebe9fec1de66f98b1ab93d22853975120dd465105
156 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 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 0.9998

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://jottigo.ru/strik?utm_term=what+is+the+theme+of+the+first+job+in+the+house+on+mango+street PDF link annotation
    • https://mabamigetope.weebly.com/uploads/1/3/4/4/134493328/kofutipudugiz.pdfIn PDF document text
    • https://rigozogukex.weebly.com/uploads/1/3/3/9/133986215/7900889.pdfIn PDF document text
    • https://lufojujerap.weebly.com/uploads/1/3/4/4/134481619/tupodo.pdfIn PDF document text
    • https://bejizasidofivi.weebly.com/uploads/1/3/4/2/134234705/toxesinadoradixife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494888/normal_5fd3a19cbac42.pdfIn PDF document text
    • https://wesoxiworikezux.weebly.com/uploads/1/3/1/3/131380467/8a8ab.pdfIn PDF document text
    • https://gujavaluzosozu.weebly.com/uploads/1/3/4/0/134013303/fotofotokap.pdfIn PDF document text
    • https://geduwitanezuter.weebly.com/uploads/1/3/0/7/130738684/6652305.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421611/normal_5fd8cb488b4a9.pdfIn PDF document text
    • http://gemubanabugawa.mypressonline.com/lapibi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445877/normal_60433aeb861d1.pdfIn PDF document text
    • https://resawipodejevi.weebly.com/uploads/1/3/0/8/130814711/rizukoxezugapogit.pdfIn PDF document text
    • https://zewabezasakaru.weebly.com/uploads/1/3/4/5/134593707/nilaba_jodivelix.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/zidenigad/new_heart_touching_love_story_mp3_song_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/16630138004.pdfIn PDF document text
    • http://sodowurivav.onlinewebshop.net/21005744248.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/video_er_reddit_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/scream_tv_series_theme_song.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/78548518686.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000f0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D4 5376 bytes
SHA-256: 818b56631d0d18b1306feb0be57a1ffc8c0e9eeec82f28dec8b7ed4ae2967a7a
font_01_sfnt_off0001030a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030A 11292 bytes
SHA-256: e4b99ee120b25559c6f146781640eb2d03ae5b56df76cbe6de7cb878a75c40b8
font_02_sfnt_off0001293a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1293A 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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