Malicious PDF — malware analysis report

Static analysis result for SHA-256 53054c82425bddb2…

MALICIOUS

PDF

38.0 KB Created: 2020-09-10 11:19:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9b86670af90c1c8444c5f70047739ae SHA-1: af00eeda4e58251ec9fe8e2afadc70a4063f142e SHA-256: 53054c82425bddb21eca4535221255a2e18ac0de636f22341d950b08797f374d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to suspicious domains and are flagged as part of a link farm. One prominent link, 'https://ttraff.link/pify?keyword=ea+bug+report+fifa+20', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other links, suggesting the primary intent is to redirect users to malicious or SEO-farmed content.

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=ea+bug+report+fifa+20
    • http://files.onyxfuneralplanning.com/uploads/1/3/1/3/131380413/pofadajigivep.pdf
    • http://dijaj.alexandrakwilson.co.uk/uploads/1/3/0/7/130775583/9739368.pdf
    • http://telemibed.actorofeurope.net/uploads/1/3/0/7/130776760/7748314.pdf
    • http://bedek.neumainnovations.com/uploads/1/3/0/7/130776819/ziwegobafefu_nifisenupozilot_wovosalupox.pdf
    • http://labofefo.goodworks.org.uk/uploads/1/3/2/6/132681746/jovowo-vogajotisizoti-jivujezum-sedonitozeve.pdf
    • http://xonogu.perlattorney.com/uploads/1/3/1/4/131407406/lamiwabizawode.pdf
    • http://files.oliveandfinch.ca/uploads/1/3/0/8/130813301/wobogirenok.pdf
    • http://jafejur.th1rdspac3.com/uploads/1/3/1/6/131606227/9706856.pdf
    • http://bijusujo.dataforceftc.com/uploads/1/3/1/4/131437987/bevekuxitag-favaxatom-sezupu.pdf
    • https://static.usrfiles.com/ugd/3ceeb9_470a767b43154f9b8a757f78b87de847.pdf
    • https://static.usrfiles.com/ugd/91e123_5aa58d4dacda4f38a50e70e9ff5f2794.pdf
    • https://static.usrfiles.com/ugd/f8de3e_eb50a89033ef4a4b97c1c6464e28045b.pdf
    • https://static.usrfiles.com/ugd/76dd3d_f6361da197914a67aeba858fe1bd5e7b.pdf
    • https://static.usrfiles.com/ugd/3649d2_55e3327d6db84039a68e4dc61f7a7736.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000575b.bin
5842e70ae923f42df90cf854efeb66cf2fa9f1e6fea6490c5a1f58fa7d9fe222
pdf-font-stream PDF embedded font (sfnt) at offset 0x575B 5232 bytes
font_01_sfnt_off0000693f.bin
45118837cd3257762e6493a788bca5ddb35ecc2ccf018d034c745f02932a3a21
pdf-font-stream PDF embedded font (sfnt) at offset 0x693F 10052 bytes