Malicious PDF — malware analysis report

Static analysis result for SHA-256 867de03bf252f087…

MALICIOUS

PDF

51.9 KB Created: 2020-09-12 20:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b678b9ea70979a0b0505c53b29f7897 SHA-1: 0cfb797f5a6e277dcf029766fe581c45d1cabc0f SHA-256: 867de03bf252f087ab26d20825849f86170cc38a2073e42cd5d28a7f9795a822
154 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 and a link farm, indicating an attempt to drive traffic to potentially harmful sites. The embedded URL 'https://ttraff.link/pify?keyword=best+live+tv+apk+june+2020' is a clear indicator of a phishing or scam attempt, disguised as a software download. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.link/pify?keyword=best+live+tv+apk+june+2020
    • http://files.shopvcboutique.com/uploads/1/3/1/0/131070911/10408c1b.pdf
    • http://nuwilavi.createwithme365.com/uploads/1/3/0/7/130776298/e92bc3f55a3a79.pdf
    • http://files.ayurglow.com/uploads/1/3/1/4/131454317/41b542eca7b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/724fb5_0d08ff81a1fe4a7fbb5902c8ccfe3f4e.pdf
    • https://static.usrfiles.com/ugd/d162e3_247fde8cc58b4022b17f2926833fa798.pdf
    • https://static.usrfiles.com/ugd/10e3af_db433f51cb17467cabf2079da7d2cd12.pdf
    • https://static.usrfiles.com/ugd/9d66c7_d587531f98244615b3ec3ae596d2baaf.pdf
    • https://static.usrfiles.com/ugd/f967ac_5978fdaefd7d43288f4c9bb96b189525.pdf
    • https://static.usrfiles.com/ugd/5a4c69_90ef7fdb47a346d1822a5e8b4f98c8e8.pdf
    • https://static.usrfiles.com/ugd/defdb4_f7c0bfc7869a4ef8be9c851987ffe45b.pdf
    • https://static.usrfiles.com/ugd/8e6e76_be72b03d5e1b4d079edff818fedb0078.pdf
    • https://static.usrfiles.com/ugd/1df9ea_0cc76e18d4704d2fbeaf06689b058f8a.pdf
    • https://static.usrfiles.com/ugd/bc0b97_bad5417726bf4e3f912faac74b55430e.pdf
    • https://static.usrfiles.com/ugd/b8c837_60aaee2e208e4dbaaa5c02bb66bc77a7.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_off00008ba0.bin
bd36b6677dc608e752cbad0e792060786b7459108d8039c7ec922a4149a44e45
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA0 5240 bytes
font_01_sfnt_off00009d9b.bin
d92043b54a4c9425661c55e0b354b28d19a7329e1758b2a06ed7b161a026ba52
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9B 11408 bytes