Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ccf4519e071747…

MALICIOUS

PDF

45.0 KB Created: 2020-08-27 13:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe1f08cc4853282f8cd167c995f04541 SHA-1: 1108aefe32eae05a7922dc49b2f9f790e785d213 SHA-256: 00ccf4519e071747d7ba698b2517988004c81246aa4990b683a750d60a46b297
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of embedded links, a technique often used in SEO link farms to manipulate search engine rankings or distribute malicious content. One of the primary links directs to a known malicious redirector, 'ttraff.cc', which likely serves as a gateway to further malicious activity. The ML classifier also strongly indicated maliciousness.

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=r%25C3%25A9soudre+un+rubik%2527+s+cube+4x4
    • http://fegigup.alteredpurposes.com/uploads/1/3/0/8/130874284/65cc31ae5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1701/9292/files/dazutiwodemibalaxud.pdf
    • https://cdn.shopify.com/s/files/1/0430/4053/8773/files/bibliometric_analysis_of_journal.pdf
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/pebujoxexubajanifakud.pdf
    • https://cdn.shopify.com/s/files/1/0433/5822/4549/files/new_balance_sheet_format_of_company.pdf
    • https://cdn.shopify.com/s/files/1/0438/3673/5645/files/nagivaxorazezasaxig.pdf
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/58567910562.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdf
    • https://cdn.shopify.com/s/files/1/0428/4681/4374/files/zupagadezukusejozuwuduj.pdf
    • https://cdn.shopify.com/s/files/1/0439/8986/0510/files/piriformis_syndrome_cushion.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/meviseso.pdf
    • https://cdn.shopify.com/s/files/1/0436/2996/9561/files/football_manager_2018_wonderkids_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kumug.pdf
    • https://cdn.shopify.com/s/files/1/0437/7932/6103/files/rifavamagopabeworilumuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/8922/3066/files/corel_draw_portable_x3_64_bit.pdf
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/pilijizelivugonumoxemixet.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_off00006dab.bin
bd88a69d77ab72dc563263167e8a951f7307dce7e0a3a8fc4d55bf02facdcd60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAB 5236 bytes
font_01_sfnt_off00007f53.bin
d871ef9ef0ae5efe45155aa917071c32158e1057d94b9d943e74cc3d91217dc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F53 12216 bytes

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