Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e89f361d277608…

MALICIOUS

PDF

43.3 KB Created: 2020-08-22 14:37:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8a92a29503fa295c76772b8bdb48217 SHA-1: dd52d70563197a082a8e05d41ca51376087b3b99 SHA-256: 17e89f361d27760862808575edb26c653746ebe56709bec58f83e0fc9a8aa636
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, specifically advertising a 'spotify android hack'. This is further supported by heuristics indicating a malicious redirector link and a PDF link farm. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure for users seeking unauthorized access or cheats for the Spotify application.

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.com/pify?keyword=spotify++android+hack
    • http://files.plymouthfigureskatingclub.com/uploads/1/3/1/1/131163782/5442817.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/90207096226.pdf
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/bravais_lattice_types.pdf
    • https://cdn.shopify.com/s/files/1/0432/7469/8902/files/95722430682.pdf
    • https://cdn.shopify.com/s/files/1/0432/0028/2783/files/21992135255.pdf
    • https://cdn.shopify.com/s/files/1/0437/5432/4117/files/rexerexaximuziwavola.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7599/files/70525175838.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/40013758491.pdf
    • https://cdn.shopify.com/s/files/1/0430/6586/8437/files/dewamagudogokufamowa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4511/7342/files/understanding_public_policy_thomas_dye_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/nomasegetiperobek.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1032/files/dodge_caliber_2020_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0448/0447/2992/files/medical_microbiology_laboratory_manual.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_off00006aef.bin
16f7eb452cad72d08343e474b3a8691af6915ccb8eaaf8b8de433ff82a8b7c83
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEF 5300 bytes
font_01_sfnt_off00007ce8.bin
e7d69e93dd3e66b49777f4ce4883869ee239f17fadcaea68daddec6978c56de7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE8 10480 bytes