Malicious PDF — malware analysis report

Static analysis result for SHA-256 1848d330840a2e81…

MALICIOUS

PDF

34.5 KB Created: 2020-09-16 16:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f25db11de6c388729fe39b9ff8e46bf4 SHA-1: 0ece28f8dc968dce4f7443a21cf49cfe7cdb7df1 SHA-256: 1848d330840a2e8169c7bc475a980d9baa2ab4d64dd8744bbf0baa34162cb180
154 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URLs, such as 'https://ttraff.link/wix?keyword=cko+kickboxing+freehold', likely serve as lures to phishing or malware distribution sites. Although no scripts were explicitly extracted, the nature of the embedded links and the ML classifier's high confidence suggest a malicious intent to redirect users to harmful 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/wix?keyword=cko+kickboxing+freehold
    • http://revaga.theoaksmith.com/uploads/1/3/1/0/131070722/wapozow_pudawibatafof_wikusajemeli_ziruxakututax.pdf
    • http://files.themercylist.com/uploads/1/3/2/3/132302876/1ee656cd97cd7c.pdf
    • http://jewonati.elishiareynolds.com/uploads/1/3/1/6/131636665/6d14240.pdf
    • http://files.lamourcatering.com/uploads/1/3/0/7/130776254/pikagugusunad.pdf
    • http://files.brittanynalangan.com/uploads/1/3/1/3/131383604/minalafidadup.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://5b0d4871-392e-4a1b-a071-73302b1174f5.filesusr.com/ugd/b56239_e3d1daeda039498b93b6d452e4c58090.pdf?index=true
    • https://fa5801b5-de68-45c9-8e8e-732a82cd1967.filesusr.com/ugd/2c8d66_7921da934e13465cb7f8bbd80eefe14b.pdf?index=true
    • https://fa5ac6a6-68c7-4882-a980-bc3f2eced65e.filesusr.com/ugd/135178_09570144b6d04d6a9b461184f078474b.pdf?index=true
    • https://981fa4d0-001c-4939-af78-fe3a0f0e38ce.filesusr.com/ugd/bc4951_ce712b60cb9a4edc85e947e0d6e146e3.pdf?index=true
    • https://7a2bd65f-741f-4b9e-b9fd-a02b1795877b.filesusr.com/ugd/24deb6_deaf3f2bbc0e4d9eb7e028d0aed97201.pdf?index=true
    • https://3c5250a1-7932-431e-a4b8-3d1a26519876.filesusr.com/ugd/d43733_ee2dcfbb1af040bcbde25511ce7f6587.pdf?index=true
    • https://a9a5e5f7-d9b5-488a-bc5a-d66ad6ab29da.filesusr.com/ugd/682d1c_9f6fd829ac85424f8897a84137e57dd6.pdf?index=true
    • https://b9fc9117-9c45-485d-9f60-ed741a78653a.filesusr.com/ugd/3283b0_8d27a328b5904df79c6238f93b8a697e.pdf?index=true
    • https://5a5b7d38-7f0b-4e92-9ccd-076edc9e83c5.filesusr.com/ugd/ab922d_71409b324187461ea8ce5f0513b5ff04.pdf?index=true
    • https://23811151-ce2c-4b53-9630-24acda97c5b6.filesusr.com/ugd/4725f1_8947b12f91f8441197eb0faf8df219a2.pdf?index=true
    • https://0f713d39-b414-4eff-bedf-f69db2a7909b.filesusr.com/ugd/c83fdb_07eca63a99cb49b3845ca2a1cfc06e6f.pdf?index=true
    • 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_off000049e8.bin
f3ddb7abd21140f9471d5f3da4c186ce0a53784836f238a45a28a5fe23ff3a5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49E8 5072 bytes
font_01_sfnt_off00005b2b.bin
ee14ccc753c4fa0f6ad0494b883ee867757c128b450bf7c555345ebe001570b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2B 10028 bytes

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