Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cd2f0ff57b2dc2d…

MALICIOUS

PDF

38.2 KB Created: 2020-06-04 01:50:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: d2d7ad4a1af508270613a6f33e80c533 SHA-1: 36cd5587200e783b87fe22b6d2f507f9bbadd9ae SHA-256: 1cd2f0ff57b2dc2dde925f3939382fba75786fca2847364636c87aa8feddee81
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

This PDF file was flagged by ClamAV as Pdf.Dropper.Agent-0 and ML classifiers indicate a high probability of maliciousness. The document body, though partially corrupted, contains references to a 'shopper's guide' and numerous external URLs, many of which are hosted on suspicious domains and appear to be part of a link farm. The primary function seems to be redirecting users to these external sites, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-9258559-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9258559-0
  • 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 http://buildsafemoney.com/uploads/1/3/0/2/130289244/130289244.html#dirty+dozen+ewg%2527s+2018+shopper%2527s+guide+to+pesticides+in+produce PDF link annotation
    • http://gelbkeismyagent.com/uploads/1/3/1/1/131164013/losaxax_kurebagejosukoj_fumupepobug_sefix.pdfIn PDF document text
    • http://thearmpr.com/uploads/1/3/1/3/131398431/sunesuvesesaru.pdfIn PDF document text
    • http://omegaaccessories.net/uploads/1/3/1/4/131482976/zigex.pdfIn PDF document text
    • http://fwdperspective.com/uploads/1/3/1/4/131438509/nadumurizase.pdfIn PDF document text
    • http://4f6.undesirable.us/uploads/1/3/1/6/131606132/1384743.pdfIn PDF document text
    • http://monsterworksmgmt.com/uploads/1/3/0/7/130776103/2b9ebbba1e.pdfIn PDF document text
    • http://mx.mrsblakelymath.net/uploads/1/3/0/7/130739906/1326912.pdfIn PDF document text
    • http://webdisk.staghornridge.com/uploads/1/3/0/5/130539940/goferetok.pdfIn PDF document text
    • http://buildsafemoney.com/uploads/1/3/0/2/130289244/terms.htmlIn PDF document text
    • http://buildsafemoney.com/uploads/1/3/0/2/130289244/dmca.htmlIn PDF document text
    • http://buildsafemoney.com/uploads/1/3/0/2/130289244/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://jajebor.files.wordpress.com/2020/06/rawilamajerusamovo.pdfIn PDF document text
    • https://mavuwepezigi.files.wordpress.com/2020/06/rewakefepukovajovuseren.pdfIn PDF document text
    • https://dazemafabuse.files.wordpress.com/2020/06/97475542690.pdfIn PDF document text
    • https://gotuluzuw.files.wordpress.com/2020/06/91006333980.pdfIn PDF document text
    • https://vosuzogareg.files.wordpress.com/2020/06/52818501030.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 4

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA5 9984 bytes
SHA-256: 4e629c399c9c7d21e49ec5a636f733d35d13834fa8e689cbdf528645621c133b

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