Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0b5b49dcdd6cc68…

MALICIOUS

PDF

56.3 KB Created: 2020-08-28 09:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 098911a43f458f3b9d2be868618acd14 SHA-1: d88ae0aba603f08f8d614bdf3b9e4cfe6ff696c2 SHA-256: b0b5b49dcdd6cc68ce7ea78149e8c68087c35748c08286b4fb484e5e8274db97
152 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, embedding numerous URLs that redirect to potentially malicious content. The primary redirector identified is ttraff.com, which is linked to malicious infrastructure. While the document body contains text related to agricultural spaces in France, this appears to be a lure to disguise the malicious intent of the embedded links. The ML classifier strongly supports the malicious nature of this PDF.

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=carte+des+espaces+agricoles+en+france
    • http://files.allencjones.com/uploads/1/3/0/8/130874253/cb396.pdf
    • http://files.bestoftimeswatch.com/uploads/1/3/1/3/131379749/e4facd24be.pdf
    • http://files.mjlphd.net/uploads/1/3/0/7/130739070/meluvefosiwen.pdf
    • http://files.hyannisportclassic.com/uploads/1/3/0/8/130814110/4066538.pdf
    • http://files.liggettportfolio.com/uploads/1/3/1/4/131438113/zifokutixibos-gajubafipif.pdf
    • https://cdn.shopify.com/s/files/1/0430/0210/1923/files/rikidozapumupe.pdf
    • https://cdn.shopify.com/s/files/1/0437/5642/1278/files/arnold_toynbee_civilization_on_trial.pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5395/files/fiwamijezowiriv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xopiforosolakalaxelavur.pdf
    • https://cdn.shopify.com/s/files/1/0436/0444/3299/files/functionalist_theory_sociology.pdf
    • https://cdn.shopify.com/s/files/1/0434/2772/5474/files/mcclelland_s_acquired_needs_theory.pdf
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/the_conformist_alberto_moravia.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/67402361988.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6200/files/xaduwurowelezamebuzazi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/8736613660.pdf
    • https://cdn.shopify.com/s/files/1/0428/4920/6439/files/24994728561.pdf
    • https://cdn.shopify.com/s/files/1/0427/8353/9366/files/karesuriwetedodevukapoduf.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007658.bin
d6da940e5da410c43b787db07c9b8edf87ef125ea54b517991b04d0fb3e8183b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7658 5132 bytes
font_01_sfnt_off000087de.bin
f8838334b66405c5152b94f02f87d7f20a293450f0a7d11422afe3366c7e6d3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87DE 12584 bytes
font_02_sfnt_off0000af39.bin
d78d7cc1a68daa951b4fbccbcfb906d5a08ad384f187125596154666a45abe72		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF39 16060 bytes
font_03_sfnt_off0000c3ce.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3CE 4324 bytes

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