Malicious PDF — malware analysis report

Static analysis result for SHA-256 12e3501a5c049d07…

MALICIOUS

PDF

43.6 KB Created: 2020-08-17 04:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b57db2b028257ad016a6a8acbf86f1fa SHA-1: fd13ab520a21f4116a34eea47738da9372fc18b3 SHA-256: 12e3501a5c049d0709dd20e1b6967b2a9582a14e1347e06370e38020ef74453c
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, masquerading as a "Serverless typescript template" to entice users. One of these links, https://ttraff.cc/pify?keyword=serverless+typescript+template, is identified as a malicious redirector. The presence of numerous links, including those pointing to potentially compromised or malicious domains, suggests a phishing or scam attempt to redirect users to malicious 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.cc/pify?keyword=serverless+typescript+template
    • http://files.drsherasackey.com/uploads/1/3/0/9/130969761/wikejojulow_xazadukalife_diwiziru.pdf
    • http://gominuge.deddingtonscouts.org.uk/uploads/1/3/0/8/130814297/8456069.pdf
    • http://febabuve.schnaggletooth.com/uploads/1/3/0/9/130968921/6679057.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1344/7584/files/5335640475.pdf
    • https://cdn.shopify.com/s/files/1/0438/2310/4160/files/african_material_culture.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/behavioral_game_theory_camerer.pdf
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/67154046556.pdf
    • https://cdn.shopify.com/s/files/1/0436/9465/3595/files/ielts_speaking_practice_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0732/files/dalumogidibaradomiruwi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6318/8383/files/bipartisan_background_checks_act_of_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/58832807249.pdf
    • https://cdn.shopify.com/s/files/1/0432/6621/2003/files/el_aprendiz_de_brujo_alexa_mohl.pdf
    • https://cdn.shopify.com/s/files/1/0436/2610/2947/files/zevegobivajejakosanitepud.pdf
    • https://cdn.shopify.com/s/files/1/0438/6842/2309/files/whole_circle_bearing_and_quadrantal_bearing.pdf
    • https://cdn.shopify.com/s/files/1/0432/9052/5849/files/fakegaziz.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7566/files/41541265195.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_off00006916.bin
408d02dcddc31281adb264a425b6960f9f61be0a48c62c810add4fc1c85d59eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6916 5344 bytes
font_01_sfnt_off00007b31.bin
227605cf63cd5ceacc55b5439041c7006b3de0f174467673349c9671e2a2c069		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B31 11136 bytes

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