Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b85c71acf902199…

MALICIOUS

PDF

75.0 KB Created: 2021-01-01 17:17:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3c9f4bf26406d14ef50f5918d7a15956 SHA-1: d44704cfd38af047cdf437a62e107a65b94e95ae SHA-256: 2b85c71acf902199a96c7d259db19be737fbba6c1009d799f65322ee9d8e3ca4
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are to other PDF files, suggesting a link farm for SEO purposes. One of the primary URLs, 'https://trafftec.ru/strik?utm_term=extreme+car+driving+simulator+online+download+mod+apk', indicates a lure for downloading software. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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
  • 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://trafftec.ru/strik?utm_term=extreme+car+driving+simulator+online+download+mod+apk PDF link annotation
    • https://cdn.sqhk.co/joraxeneli/d1gcDgj/melofazapineninujimipali.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475406/normal_5fb5fb9c86607.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417534/normal_5f9e1216d9023.pdfIn PDF document text
    • https://dusexitope.weebly.com/uploads/1/3/4/6/134646398/baziziroguvog-teronekox-lifuxi-najaloka.pdfIn PDF document text
    • https://cdn.sqhk.co/fofasafiwi/eveRFia/top_10_mep_companies_in_uae_2018.pdfIn PDF document text
    • https://zojopufowe.weebly.com/uploads/1/3/4/5/134523349/712041ddfcf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_5f8ddf8af0d1a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jovekus/67372058986.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/kibutivologopera.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/kobobug.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/xofojidefalomepizedu.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/31308872189.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/buy_floors_direct_100_oaks.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/slideshow_css_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E3 5516 bytes
SHA-256: 7ddd87ff7f37222e4d4be7da623b0cd1900fd3d95aaf9a4f9f9178d0ec07a362
font_01_sfnt_off0000eba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA8 11188 bytes
SHA-256: 0eb53bb6269e1fa4f2e1f237f097b269a6b22fbb71023b534990a1f6dd845594
font_02_sfnt_off00011060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11060 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.