Malicious PDF — malware analysis report

Static analysis result for SHA-256 496871998999005d…

MALICIOUS

PDF

74.5 KB Created: 2021-03-10 18:12:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f0b579adb1a51968e0b90ad95707af0f SHA-1: 27eb24ee78a5e7caf00eb91278d91dbedf107026 SHA-256: 496871998999005d1cd4a894701cd9c342a4c42b59f20ee753ce024d25cb506f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, with a significant portion pointing to potentially malicious or link-farm websites, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of an attempt to redirect users to harmful content.

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://gimoguvi.ru/wix?keyword=google+slides+remove+content PDF link annotation
    • https://rurefisofe.weebly.com/uploads/1/3/5/3/135325463/gokokejuje.pdfIn PDF document text
    • https://daxapiruxibi.weebly.com/uploads/1/3/2/7/132712323/kinidudujase-baderexubamijef.pdfIn PDF document text
    • http://idealica-ufficiale.site/63721996257vfbg6.pdfIn PDF document text
    • http://tesugujinarijag.mywebcommunity.org/55974515006.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/31060971003.pdfIn PDF document text
    • http://fipagolanikobax.mygamesonline.org/76226110645.pdfIn PDF document text
    • http://tokudujadi.medianewsonline.com/how_to_get_cleared_from_credit_reference_bureau.pdfIn PDF document text
    • http://laitlabs.pro/thinkorswim_or_robinhood_reddit0t8b1.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/jubiferekaka/cymatics_dubstep_toolkit.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/1879259743.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/84042183526.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/aashiqui_2_bhojpuri_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/paparazzi_lady_gaga_ukulele_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/dazawojob/desert_themed_cat_names.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/effective_academic_writing_intro.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/wipikomunizegaze.pdfIn PDF document text
    • http://zitadufafasid.onlinewebshop.net/zujemanumasurun.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_off0000e7d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D7 5140 bytes
SHA-256: 6527bae0e0f7c36b9227f42e2067bfb7d5a62b5f51d31534f4117c26a0643826
font_01_sfnt_off0000f94e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94E 10308 bytes
SHA-256: 8428deb3a38de34e67b97b411c79b5fe57c522690505c0e98f6e4c35147368ec

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