Malicious PDF — malware analysis report

Static analysis result for SHA-256 015079679387becc…

MALICIOUS

PDF

90.4 KB Created: 2020-11-03 09:06:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: f520e6df1d2e3c3a74fc8eb17471194f SHA-1: 5598463ba073365ddffd3e3cfb1f20870831f3f7 SHA-256: 015079679387beccf1f254c29cc945f996cf578eff7d82dfe33f2357cc1c46d8
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure and a large link farm. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of numerous external links suggests an attempt to lure users to malicious sites, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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?keyword=cyberpunk+2020+weapons In PDF document text
    • https://ranuxibat.weebly.com/uploads/1/3/4/5/134595997/5846845.pdfIn PDF document text
    • https://zigegawemofeza.weebly.com/uploads/1/3/1/4/131406932/situb_somexilotewinef_wununadi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366385/normal_5f93bdf055fab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381529/normal_5f8f9fff4b747.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376858/normal_5f94c4216ddec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417419/normal_5f98d26dd7ddc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371248/normal_5f9077345ad87.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/fe696587-9d04-4e2f-a3a3-bd1894960756/24432599255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e46116af-7c31-4e31-ae65-7b2623691623/deadpool_2_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27e53891-9696-4be9-9d15-f675063e4f43/37043747292.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94a501a3-bafd-436a-8030-9bd6a029447f/79671357146.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/33961222744.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/62325299723.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faf4a11c-c0dc-4a71-9253-aeff29d9b451/63796389674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4145a936-c96b-4c07-9cc3-0bfeb60b6817/76769093885.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_off00012068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12068 5356 bytes
SHA-256: 316ab9a62d97e28a162d0511a1983a8b6be47460cb557c973eda1be1bec55798
font_01_sfnt_off000132c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132C1 12620 bytes
SHA-256: 70a3ccd4b7421c0ae16c620ed5a68691b9dd29fa94bc57fae09c0c7e603d9e8e

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