Malicious PDF — malware analysis report

Static analysis result for SHA-256 09ecbddaba79549a…

MALICIOUS

PDF

77.1 KB Created: 2020-12-28 10:08:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 011805622b00850c7cbd71e6406d7218 SHA-1: d2c57a3f1acc714e938869c4a9bc09edd2e01867 SHA-256: 09ecbddaba79549a30e2a81870c1cc230d1c46883f58b5083e86fa39c8054b3e
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a strong attempt to direct users to potentially harmful sites. The ML classifier also flagged this PDF with high confidence, suggesting it is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cctraff.ru/strik?utm_term=double+guns+nashville+tn
    • https://cdn-cms.f-static.net/uploads/4490266/normal_5fe7c6a2deb3a.pdf
    • https://kajimawujejava.weebly.com/uploads/1/3/5/3/135348493/ramarusewumevem.pdf
    • https://static.s123-cdn-static.com/uploads/4365551/normal_5fc40c51e776d.pdf
    • https://cdn-cms.f-static.net/uploads/4448539/normal_5fadc9281a4ca.pdf
    • https://farupixin.weebly.com/uploads/1/3/4/3/134314126/fotaxegi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a2b12bbf-a915-44d8-9441-0be61f52fc4d/negewukodazopawari.pdf
    • https://uploads.strikinglycdn.com/files/b69ed8ea-5532-4eb0-b86f-a146d90f3652/if_i_were_in_charge_of_the_world_by_judith_viorst.pdf
    • https://uploads.strikinglycdn.com/files/5d5693de-0ca3-4a74-a227-134b14cb44f8/topoxu.pdf
    • https://uploads.strikinglycdn.com/files/387b30d7-70c5-4bde-8910-ea095cb94328/zorokudoxe.pdf
    • https://uploads.strikinglycdn.com/files/d436946c-5134-4339-a050-40983317a5cf/vepagufotanilo.pdf
    • https://uploads.strikinglycdn.com/files/a5b6ed54-296a-4f4d-ac86-a82aedfed223/hough_course_listings.pdf
    • https://uploads.strikinglycdn.com/files/6f5a71fe-6e6c-4399-a2f3-7fd0da460da2/21610623931.pdf
    • https://uploads.strikinglycdn.com/files/17adc3d5-e96e-41c6-9304-04449d2861bf/91327729193.pdf
    • https://uploads.strikinglycdn.com/files/8a6cb5bc-37c5-46ce-8785-344cdc8c8179/60843081669.pdf
    • https://uploads.strikinglycdn.com/files/9eab4063-e128-459a-91f5-e1b712600fb4/75705037970.pdf
    • https://uploads.strikinglycdn.com/files/64b7ba39-f20c-41a9-9835-75880e340ced/silent_voice_wikia.pdf
    • https://uploads.strikinglycdn.com/files/fd051b57-ffdb-4afd-a4fd-3584016308b0/best_buy_liberty_mo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f20f.bin
a30c4d625b3469fabba84f350a0a58799037e4ba68ea0965a481ce4e7d1846aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF20F 5048 bytes
font_01_sfnt_off00010349.bin
d9fc89479047b5e854a04ecc8e89389f082c257df29b49c2b8af003f6fa59299		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10349 10420 bytes

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