Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fdda47bced88757…

MALICIOUS

PDF

49.1 KB Created: 2020-10-16 21:04:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 720f5843e004d1f1e4f6ca94de9acbc8 SHA-1: 50a8c17db26a70f89d49a81c7ad996cfd05b5c4b SHA-256: 0fdda47bced88757a54685a4a6954e19124162d0cc52b86b017c84658aa5668d
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, https://ttraff.club/123?keyword=yakuza+kiwami+pocket+circuit+guide, is the primary indicator of malicious intent. While no scripts were extracted, the presence of this malicious link strongly suggests a phishing or malware delivery attempt, likely initiated via spearphishing.

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://ttraff.club/123?keyword=yakuza+kiwami+pocket+circuit+guide
    • https://cdn-cms.f-static.net/uploads/4369797/normal_5f881dec7ceb8.pdf
    • https://cdn-cms.f-static.net/uploads/4370269/normal_5f88764d5602a.pdf
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f886a9a802d3.pdf
    • https://cdn-cms.f-static.net/uploads/4370319/normal_5f887dd5d91bb.pdf
    • https://cdn-cms.f-static.net/uploads/4368246/normal_5f87fcd3a0f7f.pdf
    • https://cdn-cms.f-static.net/uploads/4369659/normal_5f89c73e2cefc.pdf
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f872b5da7c69.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/8664/2336/files/43807633763.pdf
    • https://cdn.shopify.com/s/files/1/0429/3879/4147/files/stravinsky_symphony_in_three_movements.pdf
    • https://cdn.shopify.com/s/files/1/0499/3574/5186/files/tofezumagoduw.pdf
    • https://cdn.shopify.com/s/files/1/0483/9846/7229/files/bemaxasiku.pdf
    • https://uploads.strikinglycdn.com/files/46e122ff-dcda-4d6d-b84e-ef9cd2398a7e/69271831451.pdf
    • https://uploads.strikinglycdn.com/files/4883c3ea-25e5-454e-83dc-1d07a7d93370/93129145563.pdf
    • https://cdn.shopify.com/s/files/1/0488/0685/4821/files/adorable_females_skyrim_ps4.pdf
    • https://cdn.shopify.com/s/files/1/0494/6539/3319/files/karivifutabijupeni.pdf
    • https://cdn.shopify.com/s/files/1/0484/3729/7304/files/hacking_games_download_apk.pdf
    • https://uploads.strikinglycdn.com/files/059f6410-9f7e-4a65-bd8e-7cf56bb85144/13384018156.pdf
    • https://uploads.strikinglycdn.com/files/2821ae5c-bcd9-418f-9f45-b897b98481f9/72515605130.pdf
    • https://uploads.strikinglycdn.com/files/06623715-c794-42bb-b8b9-76fbdf2dcf9e/gajigiloxij.pdf
    • https://uploads.strikinglycdn.com/files/51df00f9-0386-4a93-b055-335892dc7933/71789482668.pdf
    • https://uploads.strikinglycdn.com/files/15e01305-c28c-47c1-a4c9-153388becf49/ralaxojuwaso.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c6a.bin
0b5dc913b883adbd4e1828b07db81d21e3db43a87f28f49998a85d025956c7a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6A 5128 bytes
font_01_sfnt_off00007df8.bin
0bf7bd767daf542903ea7a652bab8f1a28c9f1c784ac011cc5c53fe90d0fa5df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF8 13528 bytes
font_02_sfnt_off0000a85a.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA85A 4324 bytes

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