Malicious PDF — malware analysis report

Static analysis result for SHA-256 7de07886e34d7b62…

MALICIOUS

PDF

60.9 KB Created: 2020-12-14 23:32:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 07bcd0f42bbf14f9c4793b17b18f0a5e SHA-1: 770a09e494ca0da28807b5280fe10c49ddfbe1da SHA-256: 7de07886e34d7b62081a913ed287ae59cdc9dcffab793ba5dc6f55af0431b7e2
214 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ggtraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, some of which are embedded within the document body. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/123?utm_term=mega+man+costume+for+sale In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366048/normal_5f961457c1a79.pdfIn PDF document text
    • https://penuwepilaxol.weebly.com/uploads/1/3/4/7/134756509/7402402.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475216/normal_5fd1abedcf938.pdfIn PDF document text
    • https://pikupazu.weebly.com/uploads/1/3/4/5/134577858/lumifetonefowow_vumegekebusomew_vekaxikiz_forujuse.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff0f8674-aae5-46a2-96ba-20aa366be7eb/xusanuko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfb011ca-931f-453c-b44a-8d6bc5c9358b/57554543770.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8c96b34-93e6-4196-a402-0909df3a8ea6/muxekivadadolumufopuxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0c7e26b-643b-4b0c-9c60-339def7849ac/78976360852.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2640ad6-5593-487e-9f46-c9a0db214eff/asimov_guide_to_the_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuwaterexaf/apush_ch_14_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/math_2415_dcccd.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/organic_nanomaterials.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/399cc7cf-e2b1-4c2b-87f7-19bfa76dc562/s_blends_age_of_acquisition.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_off0000b338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB338 5208 bytes
SHA-256: b89d58e702d3e8210b1db53774507ddccbc45a97d11b3983720ff901bfa62480
font_01_sfnt_off0000c4e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E9 10008 bytes
SHA-256: 2ce15069bbbaaafff3fd5734fd61a32dcb888146689ee7e2f649bcc29dd66637

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