Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4a73ae67c590655…

MALICIOUS

PDF

40.7 KB Created: 2020-11-02 18:51:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7900984c953922f2838ab6184a06465 SHA-1: de620ca58d860913a1a90df0a5699e8c3f87fe8f SHA-256: a4a73ae67c590655cb4d43299ea49943595866c391b41541fd81a46f09cebcf3
94 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 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the redirector link strongly suggest an attempt to lure the user to a malicious site.

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.com/pify?keyword=swtor+republic+flashpoints+in+oer
    • https://bawapumur.weebly.com/uploads/1/3/4/4/134466187/zutowadowaz.pdf
    • https://gozekukapitob.weebly.com/uploads/1/3/4/4/134443516/penuserevixejifidefa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0496/7792/6556/files/degree_bangla_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0484/9208/5409/files/nba_compliance_report.pdf
    • https://cdn.shopify.com/s/files/1/0484/9929/4363/files/12973357648.pdf
    • https://uploads.strikinglycdn.com/files/20d280f9-0f5f-4f53-abe0-4da9046e44a9/24030804868.pdf
    • https://s3.amazonaws.com/varoximu/wufebodabanakiwekolasob.pdf
    • https://uploads.strikinglycdn.com/files/ba50405b-1f44-4b11-b79c-215b397c1114/ahp_alphatig_200x.pdf
    • https://cdn.shopify.com/s/files/1/0500/9863/4915/files/15458970779.pdf
    • https://uploads.strikinglycdn.com/files/ae33e24a-a5fa-42d2-b638-a0a230d345ca/living_with_lana_apk.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_off00005cd3.bin
2961a0bd0c9c8f224a14be10c58e97940816a1189f036a350aade6885268c854		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD3 5440 bytes
font_01_sfnt_off00006f5d.bin
f453af6589e06da4d6f2b3aca811aa03f79ec50ca9b51f37664ca0ee23461bbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5D 11416 bytes

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