Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ad2ee68ea196e05…

MALICIOUS

PDF

67.1 KB Created: 2020-11-20 09:12:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8cd0345a0515841bf85213e3c66784cd SHA-1: dc9ff6dc24ac6c5ac0b5a1f3576116d3a4bf677c SHA-256: 3ad2ee68ea196e05a9f9dc9ef162d2bf51333c40236847f14ef090d51859c610
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 0.9998

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://traffking.ru/aws?utm_term=chanel+annual+report+2016+pdf PDF link annotation
    • https://latabiwot.weebly.com/uploads/1/3/4/6/134612911/b1411f7750e474.pdfIn PDF document text
    • https://sazojowob.weebly.com/uploads/1/3/4/3/134351878/7c18bf.pdfIn PDF document text
    • https://mazazogadof.weebly.com/uploads/1/3/4/3/134374066/wexiguvejiw_tumezatopapejug_webekufoba_bewadag.pdfIn PDF document text
    • https://dasitonaz.weebly.com/uploads/1/3/4/3/134379343/vajuvitidetovizu.pdfIn PDF document text
    • https://zigexumo.weebly.com/uploads/1/3/4/7/134729800/ravagogasi-miged.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/felasorarabipis/gebuwula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0db008b2-4d3f-4241-9a48-286158ce26b3/bivixitulakofavaguru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56d4cad8-29b4-408d-a9de-13368bf3befd/xumizojajuxepogiraw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2320e918-1ddb-40d0-9341-ddec6443b89e/cisa_review_manual_2016_free_downloa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5906aed6-2b0b-4db0-9412-afe1511dc0b7/vampyre_magick_father_sebastiaan.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/carcassonne_jeu_regles.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c79b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC79B 5336 bytes
SHA-256: 6b0248335b1b22995d6e5bf61e82a05a906f521119b032d9b59009d903898505
font_01_sfnt_off0000d9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B8 11136 bytes
SHA-256: 6965aeb6bbe11983c7274be1a8ec08e88dfcc466edc0cf05b3406c9c1db5f8ad