Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a4f0ab5e482d170…

MALICIOUS

PDF

64.2 KB Created: 2020-11-18 12:04:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 1e727b9c563e8cf2c452710368e3d64a SHA-1: 04cf82dfc9b0f0bf7cca84f82e4235048465b9c0 SHA-256: 3a4f0ab5e482d1709b0de2021e6e8acb057ccf42815e5346a6bb61719f1f6cdb
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The embedded URL, 'https://ggtraff.ru/aws?utm_term=elder+abuse+reporting+nsw', is the primary indicator of malicious intent, likely serving as a lure for phishing or malware distribution. The presence of numerous other PDF links suggests a link farm or redirection strategy to obscure the final malicious destination.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/aws?utm_term=elder+abuse+reporting+nsw In PDF document text
    • https://muvitaburire.weebly.com/uploads/1/3/4/4/134441723/32830b20dbe8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368756/normal_5fa82d89e7229.pdfIn PDF document text
    • https://dafalozurevibi.weebly.com/uploads/1/3/4/3/134308304/113b7855d731968.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371272/normal_5f8905c62c082.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408323/normal_5f9cc1adc18d8.pdfIn PDF document text
    • https://manukigobedor.weebly.com/uploads/1/3/4/4/134481395/xukimezorodeka_vaguxuroneno_newimakunolopi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380863/normal_5f9309349010f.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/tadovu/57647066973.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a54c88c0-7892-41d8-a520-5edd550f4694/easy_recovery_essentials_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd08a86e-7075-495c-9e69-9d05ac2f9fee/lunoporezetefetejutis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/065479f8-5112-412f-a013-4e9f056c71e2/lego_city_undercover_100_guide_albatross_island.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_off0000bd95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD95 5316 bytes
SHA-256: 98394fdddaaaf77b6386caa0791fed610c93b11bc8554c240271dc46f8d0ee4a
font_01_sfnt_off0000cfc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC5 10864 bytes
SHA-256: 02bd1df0b4a9d4a3eaa204a4641dec9579c49ecc4a59b5e0463e4636db81573f

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