Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b0b24822e378917…

MALICIOUS

PDF

49.9 KB Created: 2020-07-27 11:05:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3020b8219514143eb28806a24d1ba971 SHA-1: 6c623d8c2732aa50e3ba23430ab3400a4541df27 SHA-256: 8b0b24822e378917c7f32eb059bd1dff248a83a97c1717ab73558319b9c169b0
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is ttraff.ru, which is likely used to redirect users to further malicious content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous embedded links points to a delivery mechanism focused on external 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.ru/pify?keyword=anycast+m2+plus+android+%25E6%2595%2599%25E5%25AD%25A6
    • http://files.mymeds.info/uploads/1/3/1/4/131407734/8959684.pdf
    • http://files.spiritual-alignment.com/uploads/1/3/1/3/131398094/6702310.pdf
    • http://files.kocanada-usa.com/uploads/1/3/0/9/130969404/2193421.pdf
    • http://files.techsolcongrp.com/uploads/1/3/1/3/131398406/5016543.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/7031366965.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vatajimawi.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/guxolugipazokopon.pdf
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/rikelutijolikegekuleg.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/vafopato.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/naduz.pdf
    • https://cdn.shopify.com/s/files/1/0433/4357/7256/files/zutibizivalibugadov.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6133/files/1041987345.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/52018996361.pdf
    • https://cdn.shopify.com/s/files/1/0432/3799/8754/files/87606134579.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/fuvafegotijufasaloxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6636/files/92253644417.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_off00006456.bin
10fcb6dcf8a01ab2eacb4c2ace1279c8f60b0e42c039d2d59b3df12433e5432c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6456 3512 bytes
font_01_sfnt_off000070da.bin
1f4ad4ebec90dd1c38ba401a352fba6492a9c50cf7a5f2b1ccfbf1b3c7c31201		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70DA 5208 bytes
font_02_sfnt_off00008262.bin
dae0f12506c17deaa818396cb86411da2f7a72f10e575d6fda98e021880a3e82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8262 2744 bytes
font_03_sfnt_off00008e0d.bin
d6e40486618ccb6c57183942546d0ffe920caee34541101918cdc5216d3b1fea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0D 15112 bytes

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