Malicious PDF — malware analysis report

Static analysis result for SHA-256 bedb6cf7989ff6f3…

MALICIOUS

PDF

72.8 KB Created: 2021-01-14 20:39:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2ba58935b137b15b756ec199f109d578 SHA-1: d5c1e3dd2b519bbd50bf5123ebed7a5ad42784df SHA-256: bedb6cf7989ff6f30e3f2f1f74f8421afdef0b81f75b310fb81d3c6a1f64a5cc
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDFs hosted on various domains, indicating a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or redirecting users to malicious content. No scripts were extracted, but the PDF structure itself is used to host and link to numerous external resources.

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://trafficel.ru/123?utm_term=warren+wiersbe+commentary+pdf PDF link annotation
    • https://site-1166704.mozfiles.com/files/1166704/black_snake_identification_georgia.pdfIn PDF document text
    • https://site-1178914.mozfiles.com/files/1178914/soccer_style_kicker_nfl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464877/normal_5fa5f39d16019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471509/normal_5fbeeba3d0700.pdfIn PDF document text
    • https://wadozivapo.weebly.com/uploads/1/3/4/5/134512268/wisumikiw_tuvarab_dawiwi_bezapidiwo.pdfIn PDF document text
    • https://site-1174627.mozfiles.com/files/1174627/police_motorbike_driving_simulator_cost.pdfIn PDF document text
    • https://site-1172895.mozfiles.com/files/1172895/cluedo_board_game_rooms.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393016/normal_5f911aff9b52c.pdfIn PDF document text
    • https://site-1177817.mozfiles.com/files/1177817/house_paint_simulator.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/wixanarer/content_strategy_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/arshin_mal_alan_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/78082652190.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/68823998014.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_off0000d25d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD25D 5404 bytes
SHA-256: bacc418173ec8c39bd1900b6be041ebf7ca31ff78635947a3e51aecc0c5616bd
font_01_sfnt_off0000e4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B0 10340 bytes
SHA-256: 5d9e8489a0c28c1d872933fc5284f576980cb6a8cc0b4fa409ebeaf8e8831ef7
font_02_sfnt_off00010802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10802 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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