Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e94f6e14d4d2307…

MALICIOUS

PDF

44.1 KB Created: 2020-10-28 22:14:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d59b8cc0d65068ad07c0451a1bc0307 SHA-1: d7c200e8e18acb954c0b764ef1015a5da86458df SHA-256: 0e94f6e14d4d2307267ec08d35655ba79ac139883731a7b5cbcda42ed1ed1d5a
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector URL, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://gettraff.ru/strik?keyword=invicta+coalition+forces+mens+quartz+52mm
    • https://cdn-cms.f-static.net/uploads/4372354/normal_5f8e292964c1b.pdf
    • https://cdn-cms.f-static.net/uploads/4367644/normal_5f8d0ac241a4e.pdf
    • https://cdn-cms.f-static.net/uploads/4402737/normal_5f9265ca2713c.pdf
    • https://cdn-cms.f-static.net/uploads/4374839/normal_5f8e2f7444f60.pdf
    • https://cdn-cms.f-static.net/uploads/4369645/normal_5f93fe0036e43.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kavitokolezub/natotenuge.pdf
    • https://uploads.strikinglycdn.com/files/0101bb48-fbd1-4aba-888b-e3f061cd8a92/dibozonilagi.pdf
    • https://uploads.strikinglycdn.com/files/9fe48e90-463f-40f5-b47e-e3558cd44939/neuroscience_textbook_4th_edition.pdf
    • https://uploads.strikinglycdn.com/files/7e98aa9b-4ce4-47f2-b3f3-841906d0d953/membership_policy_sample.pdf
    • https://s3.amazonaws.com/tizowodifi/42778840545.pdf
    • https://s3.amazonaws.com/jaxesabi/90315044838.pdf
    • https://s3.amazonaws.com/subud/4646732439.pdf
    • https://s3.amazonaws.com/gozilum/69592379862.pdf
    • https://uploads.strikinglycdn.com/files/41a07c69-f8f5-4be8-b22d-12c2af6a72a2/73182120199.pdf
    • https://s3.amazonaws.com/minaxigevani/82517364671.pdf
    • https://s3.amazonaws.com/tesodagiwor/rolawofibo.pdf
    • https://s3.amazonaws.com/joterige/rapenajapogurizifibon.pdf
    • https://uploads.strikinglycdn.com/files/2049f5c3-ccb3-441b-9ce7-940926268539/xarotunewimovejezusapox.pdf
    • https://s3.amazonaws.com/mijedusovineti/31595698104.pdf
    • https://s3.amazonaws.com/zetare/add_bleed_and_crop_marks_to.pdf
    • https://s3.amazonaws.com/wifozuxeku/mewilosebowuwowufanad.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_off00006d7f.bin
cd2483cfc1eeb5785f6515e6557db50f5a614021ae8e9d57717f5caa5c080c27
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7F 5456 bytes
font_01_sfnt_off00008014.bin
ec486c6f1cc0063a47499d03ee55861ba0f7d4bcb12e68269ee06219dfd4cde5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8014 10344 bytes