Malicious PDF — malware analysis report

Static analysis result for SHA-256 0119ead123773073…

MALICIOUS

PDF

80.1 KB Created: 2021-03-17 04:23:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 21d69e44fdeaad4ebdecaa6cecbea39f SHA-1: f2da111b23e91f21b554c806494b9c13a7d3b1ae SHA-256: 0119ead12377307318e7266e9b595eeb49b5e1066325645569416f92a5c0a8c9
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO poisoning or phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious websites, likely for credential harvesting or further malware delivery.

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://jottigo.ru/123?utm_term=budget+management+and+control+pdf PDF link annotation
    • https://gitazedekof.weebly.com/uploads/1/3/1/3/131398323/38de272fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_60356937ef633.pdfIn PDF document text
    • https://xefewovureku.weebly.com/uploads/1/3/4/2/134265706/tafesutara_gakujenejop_xojadu.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/gdPYibJ/arrowood_golf_course_oceanside.pdfIn PDF document text
    • https://cdn.sqhk.co/xolovagi/jjdYgjt/smartmusic_sign_in.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370778/normal_604b2753f0d55.pdfIn PDF document text
    • https://kafunonedejo.weebly.com/uploads/1/3/4/6/134662894/roxorunaloxis-xadadobib.pdfIn PDF document text
    • https://lesikikonojen.weebly.com/uploads/1/3/0/7/130740189/8589307.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/J2hfNhe/tufokuxujofak.pdfIn PDF document text
    • https://cdn.sqhk.co/vunebegawiwa/iigie6g/sword_and_shield_set_prices.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/doxotedodoxuje.pdfIn PDF document text
    • https://19e6fc83-c281-4d06-93fd-e8b16a02b90a.filesusr.com/ugd/ce5d00_539e56c81e14421dae2acc5f3546bfef.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/vafufoxerireweko.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/xokibifuvetiranutewab.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/26179368009.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/joverasuro.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/invoice_template_photoshop_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/gokakagudasurezoderid.pdfIn PDF document text
    • https://1ffb5d6c-d890-49e0-9b87-dc10fbfa49e2.filesusr.com/ugd/8bc2a6_5007d125edae46a2a8b58c87bec100d5.pdf?index=trueIn 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_off0000ed75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED75 5180 bytes
SHA-256: fa88b11ab86c53509e1311a97971c8f2f8d5e278fb4213e8fbea8e0c1c163e31
font_01_sfnt_off0000fef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF5 11164 bytes
SHA-256: f87e24c5c949775192d0757ca3d70dc5be7b067060f818f6ab9d0667cdfa5376
font_02_sfnt_off00012522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12522 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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