Malicious PDF — malware analysis report

Static analysis result for SHA-256 03dfe479a1c8d31f…

MALICIOUS

PDF

76.0 KB Created: 2021-01-07 21:14:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 935d06782e1a659a7c559d96da6bf350 SHA-1: 779fee7fd329f504649ff7c088ef029a2565d17c SHA-256: 03dfe479a1c8d31f1724c0ecd8c310a19c38823a9839cbbe8c340974da05aff3
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/aws?utm_term=all+network+database+2018+free'. This URL is likely used to redirect the user to a phishing page or to download a second-stage payload. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and the malicious URL suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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/aws?utm_term=all+network+database+2018+free In PDF document text
    • https://cdn.sqhk.co/bobimugura/ibgojaP/dumb_ways_to_die_2_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kewudomavave/TZPkyKB/atif_aslam_songs_list_all.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481170/normal_5fe69d8703536.pdfIn PDF document text
    • https://cdn.sqhk.co/sawowudin/jijgBib/hill_climb_racing_highway_games.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503390/normal_5faf6ef07f024.pdfIn PDF document text
    • https://cdn.sqhk.co/jedelamodafa/hfhb10a/navigating_the_xfinity_stream_beta_app_on_roku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458849/normal_5fc7d8ef37e0c.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/LiG2jdQ/tanivesatapiwalizewam.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zurovajij/gavufimalagepu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17737c04-3641-4fea-99e4-c1175122c3a0/blogging_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4362e68-41ca-4300-96b3-3b2965323478/jukudevivoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/720263ec-5507-456a-9ed9-80a1589b7f01/nojokubumosa.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/beginners_guide_to_star_trek_online.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000d83a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD83A 13824 bytes
SHA-256: 254ac30de05b0cdd32caf3e37af0f619e2b1b6f992a650b0c58c9b6eaf8f5d01
font_00_sfnt_off0000c4b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4B5 5704 bytes
SHA-256: a64c9932d81913fc7e88fa57b6060b0965a3cfac7db7ef26c5426477b82e0e4f
font_02_sfnt_off0000fef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF7 10580 bytes
SHA-256: ab3687de147a41bd311d5b76e07d9a56dfb4b2f1cbb20b969fb813f5ce59a9f7

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