Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c07885f876d2aee…

MALICIOUS

PDF

45.1 KB Created: 2020-06-08 00:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: d315ab73259adaab9ace42642bc66da3 SHA-1: f731cf76fbd3cda62b726ee1eb3d742ed5d5856b SHA-256: 7c07885f876d2aee881ef3e9f28d9100012e4010ec54fa6c1dd8430b7c6e75d9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as Pdf.Dropper.Agent-8256588-0 and ML classifier, indicating malicious intent. The heuristic PDF_SEO_LINK_FARM indicates the presence of a mass external PDF link farm, with numerous URLs pointing to external resources. The embedded URLs and the document body suggest the primary goal is to redirect users to a large number of websites, likely for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-8256588-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8256588-0
  • 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://perfectoitaly.com/uploads/1/3/0/7/130739169/130739169.html#saints+row+re+elected+trophy+guide PDF link annotation
    • http://mx.randolphroadrunners.org/uploads/1/3/0/5/130546096/xenisev.pdfIn PDF document text
    • http://billy-nelson.com/uploads/1/3/0/3/130313107/1ce1c1ce.pdfIn PDF document text
    • http://mta-sts.suffernwrestling.com/uploads/1/3/0/7/130775903/dunodajerotuw-jogojanatokus-sipelozaf.pdfIn PDF document text
    • http://moralinjuryhealinginstitute.org/uploads/1/3/0/7/130739150/5b3f063a505e.pdfIn PDF document text
    • http://6thfloormusic.com/uploads/1/3/1/3/131384735/6581852.pdfIn PDF document text
    • http://prevostelectric.com/uploads/1/3/1/8/131872037/velot.pdfIn PDF document text
    • http://judahglobalsolutions.com/uploads/1/3/0/3/130323295/6993293.pdfIn PDF document text
    • http://beadsbybella.com/uploads/1/3/0/7/130739791/cd2bb65f95b9.pdfIn PDF document text
    • http://931sanchezst.com/uploads/1/3/0/2/130288006/4a91465cbf2c5b.pdfIn PDF document text
    • http://hostmaster.easetherapy.uk/uploads/1/3/0/8/130873740/8061001.pdfIn PDF document text
    • http://facebookmarketingforgyms.com/uploads/1/3/0/7/130739987/suxovu.pdfIn PDF document text
    • http://indiras.net/uploads/1/3/0/5/130538996/3988547.pdfIn PDF document text
    • http://mta-sts.mx.solonvotes.org/uploads/1/3/0/2/130287923/fometusotipiv_zerurukud_kitumozolig_fodidikol.pdfIn PDF document text
    • http://webdisk.lilhandsbigdreams.com/uploads/1/3/0/8/130873965/6921648.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://xuvisoje.files.wordpress.com/2020/06/jetugufifabejasewutal.pdfIn PDF document text
    • https://wurataz.files.wordpress.com/2020/06/55167628299.pdfIn PDF document text
    • https://nazelugizati.files.wordpress.com/2020/06/tukufujukafufitokuwaf.pdfIn PDF document text
    • https://ladugutefege.files.wordpress.com/2020/06/gigaxamizonigovubitu.pdfIn PDF document text
    • https://wivobajet.files.wordpress.com/2020/06/luvuzebutuwukagat.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 5

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_off00007fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA6 12148 bytes
SHA-256: 249414be411433ff14611cdcad46eca90f3bdddc2405aa9949b7e5e25a107a5f

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