Malicious PDF — malware analysis report

Static analysis result for SHA-256 30fc1e8dfd97e0bc…

MALICIOUS

PDF

68.7 KB Created: 2020-11-25 23:51:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9ad230a9094dd53345948fa61baa8a18 SHA-1: 1b323650af5b1e38a391f67adbd60148da999556 SHA-256: 30fc1e8dfd97e0bc8bc4fc0126f57d97672650f522073bf04ab2d0523d9bbf9c
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified as a link farm, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, contains text related to "San francisco garter snake range" and authoring information suggesting it was generated by wkhtmltopdf, likely to appear as a legitimate search result. The presence of external URLs indicates an attempt to redirect the user to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/123?utm_term=san+francisco+garter+snake+range PDF link annotation
    • https://dumopodowejuna.weebly.com/uploads/1/3/4/5/134591879/rewuvibekup-fofefukop-timepipe-xidojegutuzel.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/mukibubogevur.pdfIn PDF document text
    • https://gavojaxuwutik.weebly.com/uploads/1/3/4/3/134319320/21498ff3e.pdfIn PDF document text
    • https://sazinuje.weebly.com/uploads/1/3/4/5/134588850/1820238.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/sodoxi/waxuzapokepewapimotis.pdfIn PDF document text
    • https://s3.amazonaws.com/jolufozo/55728211777.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/38917253114.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/cortana_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/golden_son_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65482d8f-d82f-4d97-a63d-d9d80607d1c2/57536167828.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/chute_libre_physique_formule.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_off0000cd0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD0D 5184 bytes
SHA-256: 8e6bfdc982218c74d0491b870655c4ce54ba47272628538fff92c5988f3ab2de
font_01_sfnt_off0000dec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC6 11172 bytes
SHA-256: 54155950baf1fa04cbc26525a5dfcc84bfcf652752ff82b95be2a8da3beecccb

Open this report in the interactive analyzer, or submit your own file for analysis.