Malicious PDF — malware analysis report

Static analysis result for SHA-256 22e5c99cb3146b2c…

MALICIOUS

PDF

75.6 KB Created: 2021-01-03 12:48:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 32e647dac4b639f235fc75f0b70dbb63 SHA-1: c4231f42e3393f5455ed2ac66a4431d344ca7c02 SHA-256: 22e5c99cb3146b2c1ec60db0625d7439679303311cb6d559a591a907612eed7d
154 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a "PDF_SEO_LINK_FARM" heuristic. The primary URL found is "https://traffset.ru/aws?utm_term=gezamenlijke+agenda+app+iphone+en+android", which suggests a potential phishing or SEO manipulation attempt. While no scripts were explicitly extracted, the presence of numerous external links and the ClamAV detection as "Pdf.Phishing.Trojan" strongly indicate malicious intent, likely to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9889

Heuristics 4

  • 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
  • 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://traffset.ru/aws?utm_term=gezamenlijke+agenda+app+iphone+en+android PDF link annotation
    • https://cdn.sqhk.co/sopiloroda/hhjTejh/9347587437.pdfIn PDF document text
    • https://bunavomotuta.weebly.com/uploads/1/3/4/6/134606544/tigewiwi-mozexilironu-tidalala-bukozol.pdfIn PDF document text
    • https://cdn.sqhk.co/zifiguwosu/hghageA/wadajelewox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384819/normal_5fa83f72ab2c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426697/normal_5fbeeede5f746.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448116/normal_5fbf4d8bbc3e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386089/normal_5fcbc5dc5fa19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495043/normal_5fba7b870fa1b.pdfIn PDF document text
    • https://rizomoxus.weebly.com/uploads/1/3/4/5/134589692/lasum.pdfIn PDF document text
    • https://tukibasitotaz.weebly.com/uploads/1/3/4/4/134445351/nuzegolik-dupipagumojiji.pdfIn PDF document text
    • https://cdn.sqhk.co/ripigopes/gjcLhim/40102339853.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/PcB9jeK/63013773211.pdfIn PDF document text
    • https://cdn.sqhk.co/kagurase/9PlojeG/necromancer_build_eso_stamina.pdfIn PDF document text
    • https://cdn.sqhk.co/zewuxumaro/Ngj46U4/supipixafax.pdfIn PDF document text
    • https://cdn.sqhk.co/kafexobesa/igjhc5t/guess_the_anime_quizzes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE692 5416 bytes
SHA-256: 1a900c4ad41419d790012f155b18d7b4df1884921245f0d853aee0942237c1ff
font_01_sfnt_off0000f8d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D9 2484 bytes
SHA-256: 3957183e8ce92d98792d4d932155d0057f4773d25fcb72ecf8e2056c5eb9c99e
font_02_sfnt_off0001037e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1037E 11256 bytes
SHA-256: 3a8e0c2504b9393a5e115e4a1950e6862047082fed4621a22d1073fc93de7486