Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddaba337c39f7101…

MALICIOUS

PDF

129.5 KB Created: 2020-09-19 07:40:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 006e5fc96e29a94f12f6aaf7180e5ec5 SHA-1: 30c5389e8f2f892e97e54643d86c7572660aeb2b SHA-256: ddaba337c39f7101642946b8f18e1f22df68e048438583fa557139d7b797438f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a specific URL designed to redirect users to malicious content, disguised with keywords related to popular games. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK directly indicates the presence of a malicious redirector. The ML classifier also strongly suggests maliciousness. The document body, though heavily obfuscated, contains the same malicious URL and keywords, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/wb?keyword=unblocked%20games%20weebly%20zombocalypse%202%20hacked
    • https://cdn.shopify.com/s/files/1/0434/5603/7017/files/45819389729.pdf
    • https://cdn.shopify.com/s/files/1/0435/2350/6327/files/lucian_guide_tft.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/pumixopalelogodogewata.pdf
    • https://cdn.shopify.com/s/files/1/0438/4138/8709/files/vivah_all_songs_mr_jatt.pdf
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/dekipubizanufejisez.pdf
    • https://cdn.shopify.com/s/files/1/0466/7742/6341/files/king_size_bed_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/9763/6512/files/93247586657.pdf
    • https://cdn.shopify.com/s/files/1/0429/6641/7571/files/nanudedozefikuraleletito.pdf
    • https://cdn.shopify.com/s/files/1/0448/6771/5234/files/mba_cet_result_date_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/33774820491.pdf
    • https://cdn.shopify.com/s/files/1/0431/8596/3168/files/23065631900.pdf
    • https://cdn.shopify.com/s/files/1/0449/0225/2711/files/papub.pdf
    • https://cdn.shopify.com/s/files/1/0439/3736/6174/files/20842415415.pdf
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/anet_a8_steps_per_mm.pdf
    • https://cdn.shopify.com/s/files/1/0431/7125/0333/files/rixixavijubimawifive.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
stream_003_off00006ef6.bin
f71b84187431b45bfa015bbe19e6d4d36d47df8a883ec80c1d8bca037a320115		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6EF6 97864 bytes
font_01_sfnt_off00019329.bin
8fa875ec52571fa828de118e3228c249cdbbe51dd4a19c7baade7db554f80d22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19329 5960 bytes
font_02_sfnt_off0001a76f.bin
da6aa6fb9a37e48cc81b7af0e03d301615f8eabdb41b8661621ef2ad69277c53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A76F 15044 bytes
font_03_sfnt_off0001d63d.bin
e9884f80be49efadb12250227f438a023eb4cee47842022a6938c0f0bc0421d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D63D 19228 bytes

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