Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1b39ce5e568c63…

MALICIOUS

PDF

75.9 KB Created: 2020-12-21 00:05:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 01191cb9c5e77f01812c95ffbed672e5 SHA-1: b9b20be3d60e97ef8daec1abec8e9e966e5a7e5c SHA-256: dd1b39ce5e568c63693b598708f67541ba48fc7d42a29ce26f24202e48490a8c
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to Weebly domains, suggesting a link farm or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' point towards an attempt to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/123?utm_term=best+strategy+for+clash+of+clans+base PDF link annotation
    • https://dopijixofovaje.weebly.com/uploads/1/3/4/6/134692352/jogosunujo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471704/normal_5fad44b353d79.pdfIn PDF document text
    • https://kutinimi.weebly.com/uploads/1/3/4/6/134608846/8872662.pdfIn PDF document text
    • https://kadikodol.weebly.com/uploads/1/3/4/7/134747526/wimivezuxumubamowow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418565/normal_5fd9d34d0f7a1.pdfIn PDF document text
    • https://pegiromilu.weebly.com/uploads/1/3/4/6/134683304/7798430.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481825/normal_5fc60fc140d8b.pdfIn PDF document text
    • https://mufedagejex.weebly.com/uploads/1/3/4/7/134726032/dujulovukopofelig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sazomo/61094307887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad7f8536-089f-4030-be56-d85bf2133533/little_miss_dangerous_album_cover_model.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d373e9fc3622d543b091/t/5fcf3aaeb8233e30dfa6e7a2/1607416494696/beer_pong_pocket_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/betuweximiridid.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/83564432440.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/31546886673.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d8138ef7301f8b2a384c/t/5fcce8ec978da30c56fda831/1607264494451/tumblr_aesthetics_quotes.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_off0000ebce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCE 5436 bytes
SHA-256: 6df212d2b55a21518f2e80e4f5c3a69917ddf5d9d1e391ff429ed140bde831e5
font_01_sfnt_off0000fe54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE54 10664 bytes
SHA-256: 9160daa361b8ed047a6acd5f36f6bca26f0495dd7175cd1cc0c2f8fdd0cd638e

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