Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae5142c178bf6f1…

MALICIOUS

PDF

36.4 KB Created: 2020-11-03 21:21:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 29fa3ef683c4a9a42adcdf439cd52120 SHA-1: 28314340ed4ffc67e19c020c53f16ae9fc2e1ca7 SHA-256: 7ae5142c178bf6f192bc835cf3265c71f1b16819779375fbc0be2cac99a99493
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, many of which point to disposable domains and known malicious redirector infrastructure. The primary link directs to 'ggtraff.ru', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to these URLs, indicating an attempt to drive traffic to malicious sites.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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?keyword=guide+to+producing+a+fashion+show+pdf In PDF document text
    • https://pudibodug.weebly.com/uploads/1/3/4/4/134464821/9980361.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/tubujife.pdfIn PDF document text
    • https://lasomuvexovip.weebly.com/uploads/1/3/0/8/130813571/duvilofogawub.pdfIn PDF document text
    • https://tenagudewujuga.weebly.com/uploads/1/3/1/1/131164273/8557400.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/sokiranenixagomine.pdfIn PDF document text
    • https://pipalilivo.weebly.com/uploads/1/3/4/3/134310902/ce2757d613e479.pdfIn PDF document text
    • https://ravixibede.weebly.com/uploads/1/3/4/5/134584659/5820154.pdfIn PDF document text
    • https://tivurenufetoza.weebly.com/uploads/1/3/4/2/134235987/fidemepugepitagukek.pdfIn PDF document text
    • https://juzudibat.weebly.com/uploads/1/3/4/3/134328144/7404039.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/14b638c9-d3d7-4250-8188-d6929fd6bccd/94957542796.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/391db376-eeb4-43b9-81cb-061f312e2b23/92605235031.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_off0000501b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x501B 5508 bytes
SHA-256: ac56d7368ebad5062a87a8260e55a6d4aa11eec503049fa1b709e723f93c44ae
font_01_sfnt_off000062e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E8 10060 bytes
SHA-256: de61e1d1885c91413e935bffb37bb8c567e078de43ea0f8995bb36000a5fd5e0

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