Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60a178aad44e0d8…

MALICIOUS

PDF

44.4 KB Created: 2020-10-31 08:17:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0365046a321c17b70a535db671a3c8a0 SHA-1: 27d9d3fba244c0d4afb9c7f886fab1ef11ee49b7 SHA-256: c60a178aad44e0d8f4bd8c285c89331b1b5978386bbd2fcd0de89fa1e26e2938
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of embedded links, masquerading as search results for technical queries, which redirect to malicious infrastructure. The primary malicious URL identified is https://gettraff.ru/strik?keyword=how+to+find+average+force+of+air+resistance. The document's structure and the presence of numerous links suggest a link farm or SEO poisoning attack designed to drive traffic to malicious sites.

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://gettraff.ru/strik?keyword=how+to+find+average+force+of+air+resistance In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2449/7863/files/weaponsmith_wow_classic_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90aff97b-b79b-43fb-9dca-618e0a72b990/60352145323.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/anisometropia_y_aniseiconia.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/bsc_1st_year_physics_practical_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1673/0799/files/ground_hawg_tires_sizes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2910/2244/files/craigslist_snohomish_county_for_sale_by_owner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1491/2661/files/best_friend_ringtone_download_pagalworld.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3146/8453/files/66699014293.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/382cfac7-51bd-43e3-a993-04c5d886831a/57564846566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5033/5384/files/20995558922.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aac9d18e-383d-41e8-91c7-bde7cacf0c7c/33405882.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dcf8b8e-0aa4-4847-885a-51d3aee5e1b8/circuit_worksheet_doc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6609e28-1881-4532-9c8d-21a5deb41c4a/neruso.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CF 5056 bytes
SHA-256: c18fb6339f831790c52292ce0f34d7827b6c8398f65679b7e0a3523eda0e2cdb
font_01_sfnt_off00007426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7426 10208 bytes
SHA-256: 03b149b6a6e8cad61f32e5c0f1336b057c7795805433f0d3d60e3699d9246d3a
font_02_sfnt_off000096ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96AB 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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