Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba9bff77af9f6b15…

MALICIOUS

PDF

101.6 KB Created: 2020-11-26 01:21:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ba2b5e2a3bee8fa98d22f5a404c0b1e6 SHA-1: 863660d0da8086949e3ea739bf3704dd330bbde6 SHA-256: ba9bff77af9f6b15e6826908e650b5b68aada4ed4659fe235b9bee6759fb0b90
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many pointing to Weebly-hosted PDFs, indicative of a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/123?utm_term=timeline+bc+ad+bce+ce PDF link annotation
    • https://tolafapod.weebly.com/uploads/1/3/4/4/134486806/miposiwibumu_lisujetudikek.pdfIn PDF document text
    • https://pexazunawilaga.weebly.com/uploads/1/3/4/2/134265520/33bd5a4fd54.pdfIn PDF document text
    • https://xavupavise.weebly.com/uploads/1/3/4/5/134584264/8815406.pdfIn PDF document text
    • https://pebawatiwokup.weebly.com/uploads/1/3/4/5/134576243/2877624.pdfIn PDF document text
    • https://gumakamatiz.weebly.com/uploads/1/3/4/6/134600955/zegetodu.pdfIn PDF document text
    • https://zilasemewoxuj.weebly.com/uploads/1/3/4/3/134318224/9240586.pdfIn PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/5123699.pdfIn PDF document text
    • https://kojepogezoxuta.weebly.com/uploads/1/3/4/4/134487575/290761c9b6d845.pdfIn PDF document text
    • https://jotevugujuz.weebly.com/uploads/1/3/4/6/134675951/689a31.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/woberiz/adobe_illustrator_cc_2017_tutorials.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/alert_beep_nextel_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/84773034.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/onkyo_tx_sr605_remote_setup.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D47 3456 bytes
SHA-256: 2987c878328462e23428b12cfa832f332f74f82fb7d7ccee6d9d3aa8870ed43a
font_01_sfnt_off0001499e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1499E 4900 bytes
SHA-256: e0a9972f703100f08faf0fad7f229a3b4c0be7ce22cbfd83d3074ef66a5f4d88
font_02_sfnt_off00015a32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A32 16572 bytes
SHA-256: 7deb974cff70094bebf43fb2d970ee6ef5dc02ad97cf15d61c2ecfdfcd485dc8

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