Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b0baa27e164e3dd…

MALICIOUS

PDF

45.0 KB Created: 2020-08-03 03:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17c602d8699da27dd5775c589484b661 SHA-1: c92785e6746841b36a3459fe660b076ebf0abf83 SHA-256: 2b0baa27e164e3dd5cc0c164894dc7b4539f0924818e7ead111b5a15ce942cbe
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file was flagged by multiple critical heuristics, including PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM, indicating it's part of a link farm designed to redirect users to malicious content. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which is likely used to host phishing pages or distribute malware. The document body contains obfuscated text and embedded URLs, further supporting the malicious intent.

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=yamaha+rx-+v375+manual
    • http://files.alpha-nursery.com/uploads/1/3/1/4/131406735/5304282.pdf
    • http://files.medusagoddesshair.com/uploads/1/3/1/4/131482919/2d4a851f921.pdf
    • http://files.grundmeyerleadersearch.com/uploads/1/3/1/6/131636990/sifixoj_jutixepipi_bevasagipaxuja_sivosukisozi.pdf
    • http://files.michaelmaguire.com.au/uploads/1/3/0/7/130739891/8258301.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/dimowi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/58498429593.pdf
    • https://cdn.shopify.com/s/files/1/0432/6755/5481/files/wewelijuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/61637446666.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/attack_on_titan_crimson_bow_and_arrow.pdf
    • http://files.cstaudhammer.people.ua.edu/uploads/1/3/0/7/130775707/5556519.pdf
    • https://cdn.shopify.com/s/files/1/0432/6811/2550/files/pioneer_car_radio_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/7814/7491/files/verogikujisiwulox.pdf
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/mimefiwobozot.pdf
    • https://cdn.shopify.com/s/files/1/0430/7746/8311/files/37746974634.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/the_nanny_full_episodes.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/47643266812.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007056.bin
5c280dc30eebf03a39c4052eb89ca715f8135e42c475382012e5c19ea7ca98c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7056 5236 bytes
font_01_sfnt_off00008219.bin
6d0b670abdd1d57a33352ce1cdb714b56fa850a9d5d61dbf5695fc0697d2fdea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8219 10816 bytes

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