Malicious PDF — malware analysis report

Static analysis result for SHA-256 02c5a0b948a2caef…

MALICIOUS

PDF

94.0 KB Created: 2020-08-22 23:20:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f29846a5569386d463ca0898a48f623f SHA-1: d3ea69310b5e615ed5fd5bdc98ea05799d2f7b80 SHA-256: 02c5a0b948a2caefff313e9e057e6eba479a30ee36f75411e4f5713bbc16852f
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector link to 'ttraff.cc', suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to 'antarctica penguins information' and the authoring application 'wkhtmltopdf', indicating a potential lure. The presence of many external PDF links further supports the idea of a link farm used for malicious redirection.

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.cc/pify?keyword=antarctica+penguins+information
    • http://files.cloakroomtheatre.co.uk/uploads/1/3/1/0/131069869/3636455.pdf
    • http://files.aedutah.com/uploads/1/3/1/4/131454850/8928521.pdf
    • http://nebarewe.noorulhudaboutique.com/uploads/1/3/0/9/130969191/0bf849ab25.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/lunagamolevinog.pdf
    • https://cdn.shopify.com/s/files/1/0437/5543/8234/files/57158578134.pdf
    • https://cdn.shopify.com/s/files/1/0433/5570/1398/files/realidades_2_capitulo_1a_practice_workbook_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11067845032.pdf
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/3263936618.pdf
    • https://cdn.shopify.com/s/files/1/0432/3177/2835/files/31362264403.pdf
    • https://cdn.shopify.com/s/files/1/0432/1820/6887/files/98747832690.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6261/files/penguin_readers_level_6.pdf
    • https://cdn.shopify.com/s/files/1/0431/6699/0502/files/79133223734.pdf
    • https://cdn.shopify.com/s/files/1/0438/9784/7976/files/balakrishna_movie_songs_all_movie_songs.pdf
    • https://cdn.shopify.com/s/files/1/0431/2144/2977/files/reglage_carburateur_scooter_2_temps.pdf
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/itextsharp_to_html.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001118f.bin
ec69a963facca4ba0fdb22102ca2afa8f4eec1cf94ee50e8225ce58c29985c96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1118F 5172 bytes
font_01_sfnt_off00012304.bin
423b883613f9711ee00c1af836fc994a935659a3d09d5020b64e4ef83e08fd98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12304 1716 bytes
font_02_sfnt_off00012bab.bin
cf2290df01d865b1b1a344bb45cf38a7210e742d1c860717c3f105602bb4b509		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BAB 15760 bytes
font_03_sfnt_off00015bfa.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15BFA 4324 bytes

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