Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eca63032877aa32…

MALICIOUS

PDF

41.5 KB Created: 2020-08-26 11:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2353b1298b1cd5dc8a75f44c9b8496e SHA-1: 671bd732c0c566805478f47fa277603858d425a8 SHA-256: 2eca63032877aa3207993ec25adf4ef58195d5e91b9d5cea0d260248787e2caf
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.com/pify?keyword=bitcoin+trading+platform+software, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting a lure related to cryptocurrency trading. The primary intent appears to be redirecting the user to malicious infrastructure via the embedded links.

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.com/pify?keyword=bitcoin+trading+platform+software
    • http://sukam.kidkatranch.com/uploads/1/3/2/8/132814664/3e1b4be6c.pdf
    • http://files.eisol.my/uploads/1/3/1/6/131607163/1157408.pdf
    • http://files.debbietuepah.com/uploads/1/3/2/3/132302993/lonovowizurufat.pdf
    • http://ragedod.backyardhackers.com/uploads/1/3/1/4/131452958/xojujebitegis_zajanafomavot.pdf
    • http://kelam.deckinaday.com.au/uploads/1/3/2/7/132712676/8195076.pdf
    • https://cdn.shopify.com/s/files/1/0428/4029/3543/files/cours_orthographe_francais_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/nba_team_list.pdf
    • https://cdn.shopify.com/s/files/1/0462/3335/4389/files/acquaintance_sentence_formation.pdf
    • https://cdn.shopify.com/s/files/1/0430/3912/9751/files/singapore_sri_lanka_free_trade_agreement_sinhala.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/nmp_coliformes_en_alimentos.pdf
    • https://cdn.shopify.com/s/files/1/0434/3198/5309/files/lejipoxewurumitimowifolok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7082322425.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/rotetaxinitazagelibese.pdf
    • https://cdn.shopify.com/s/files/1/0431/9730/0885/files/baby_video_song_hd.pdf
    • https://cdn.shopify.com/s/files/1/0434/8382/4294/files/le_canard_enchain_2020.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_off000062b8.bin
22c0d8288ea4d36cd83aff0aec19ae90c8a899a08acf9f828f84822eebef8f9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B8 5616 bytes
font_01_sfnt_off000075c3.bin
940947989e76a8724d947499e2382f82b50b8bb8352d29b0947d87d5afc60ca1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75C3 10384 bytes

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