Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3b0044c4b8da503…

MALICIOUS

PDF

144.9 KB Created: 2020-11-20 13:42:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0b7474343ac48c692edd2719002408f SHA-1: 171b977491b932114587b57c8484ec6165711fec SHA-256: e3b0044c4b8da503e3897a9afaece9d304288eea9d10591b03940d4bf7d1e58d
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'No man's sky manufacturing facility puzzles' and embeds a URL pointing to a suspicious domain. ClamAV and ML classifiers strongly indicate maliciousness, likely for phishing or malware distribution. No scripts were extracted, but the embedded URI is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://traffnew.ru/strik?utm_term=no+man%252527s+sky+manufacturing+facility+puzzles
    • https://cdn-cms.f-static.net/uploads/4427509/normal_5fa2edfb523c2.pdf
    • https://cdn-cms.f-static.net/uploads/4413227/normal_5fad4d481832e.pdf
    • https://cdn-cms.f-static.net/uploads/4373304/normal_5fb35e9818703.pdf
    • https://cdn-cms.f-static.net/uploads/4451927/normal_5fa35b08de56f.pdf
    • https://cdn-cms.f-static.net/uploads/4371010/normal_5f8a29584a4cb.pdf
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f878445292a2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5c2c4d6e-e913-4d18-970b-269cc92dce2b/cuisinart_soft_serve_ice_cream_maker_instruction_manual.pdf
    • https://uploads.strikinglycdn.com/files/cd51e825-bdf1-4aa2-8299-5ba15fc16875/20919565330.pdf
    • https://uploads.strikinglycdn.com/files/db805818-e14a-4ff1-98fc-7baeac044f85/26831090118.pdf
    • https://uploads.strikinglycdn.com/files/fe8b70d6-d133-4b95-9fe3-08cce15160d0/solitaire_chess_game_rules.pdf
    • https://uploads.strikinglycdn.com/files/9c479928-92b4-4df4-8388-76ddc8292a26/recurve_bow_plans.pdf
    • https://uploads.strikinglycdn.com/files/b498d8f0-3e69-4623-98b8-98cb38a87694/97015115049.pdf
    • https://uploads.strikinglycdn.com/files/f42fd6dd-adb1-4273-8fe8-4c52fa289940/how_to_crack_photoshop_cc_2018_mac.pdf
    • https://uploads.strikinglycdn.com/files/c056d485-d145-4f02-9366-df5b57a34ec3/broke_millennial_erin_lowry.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_off0001fba7.bin
85be61b66839270b6d7d9a5a46102a160052f23b8ffa4daf2e883ef9a04e92f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x1FBA7 5552 bytes
font_01_sfnt_off00020e9d.bin
abd3f119bb111ed7afdd370ca9af0c78977a9093da052bcef9f734249459f15e
pdf-font-stream PDF embedded font (sfnt) at offset 0x20E9D 11556 bytes