Malicious PDF — malware analysis report

Static analysis result for SHA-256 b324f7d142810c0f…

MALICIOUS

PDF

43.9 KB Created: 2020-11-02 03:28:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 7035ebbef9222ebd4668a5b2bafc0cf8 SHA-1: 38b333442ab4b7ff06a0cb0191a8e7cfae0c83aa SHA-256: b324f7d142810c0f65bcbea4cb1eedb80aa25654d97d96f407e96cd85aaf14ef
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/123?keyword=apa+2020+conference+schedule'. The document body, though heavily obfuscated, contains text that appears to be a lure for an "Apa 2020 conference schedule". The ML classifier also flagged this PDF as malicious with high confidence.

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.me/123?keyword=apa+2020+conference+schedule In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408864/normal_5f97002d978c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383688/normal_5f8baeecb178c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376375/normal_5f9f20f27280a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420903/normal_5f97423744341.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391623/normal_5f9f36ec661dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407998/normal_5f9a777e208d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405925/normal_5f92c4b4343c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cfe3111-9ac6-40c6-b4d6-af7c0b1ac390/ejercicios_de_divisin_de_polinomios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2369/4506/files/pupolez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c8aa13f-56d8-4337-8eb1-11e44b305537/gaxuzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48c1d248-97ec-44ab-a326-4d6b622a0fc1/lezorogamajuzemozexenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db0e85b7-8140-4029-b173-0b26cafc39e9/83923014260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2568/4420/files/rowegude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8511/2496/files/uc_davis_summer_session_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/23517573923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0129/7072/files/manarazivegekisosilawu.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6877 5504 bytes
SHA-256: 8f14b8e49a907e2886f7ea7cf1082d8b16ae387c1c3be681a79b83af7319dc1c
font_01_sfnt_off00007b2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2C 11576 bytes
SHA-256: 0c47efb863be62e6c19287ac1eb714951ad6cafb248f184561e12c3ea5de6df4

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