Malicious PDF — malware analysis report

Static analysis result for SHA-256 91d3c7b8159a6cbd…

MALICIOUS

PDF

46.2 KB Created: 2020-08-18 19:31:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5411e463fd6f38937f87155a61874156 SHA-1: 09fcebc32066d41028bcb3eb9645a360fcc6f2ca SHA-256: 91d3c7b8159a6cbd08707f269c1db44a14fbccdb166098e0b7c492178aed3b91
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector found by heuristics. This suggests the document is designed to trick users into visiting malicious sites under the guise of providing content related to Arabic fonts and Islamic themes.

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/pify?keyword=arabic+font+keyboard
    • http://files.itsnotstreaming.com/uploads/1/3/1/3/131383921/lemufalaxevat-xelafopukuxazap-vixetilaluto-losinijemupi.pdf
    • http://duluxekep.thoughtprovokingmomentsblog.com/uploads/1/3/0/7/130776644/6980865.pdf
    • http://files.curielkitchendesigns.co.uk/uploads/1/3/1/8/131856326/f384d4c795948.pdf
    • http://files.catcaricature.studio/uploads/1/3/1/3/131397950/jowededevamajen-jafugejejomisi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8784/5790/files/99_names_of_allah_coloring_pages.pdf
    • https://cdn.shopify.com/s/files/1/0450/6569/9478/files/tic_tac_toe_in_c.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26225030347.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5678/files/old_macdonald_had_a_farm_story_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/jepopatefomure.pdf
    • https://cdn.shopify.com/s/files/1/0448/0398/1463/files/archivador_de_documentos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3755/files/5815401534.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8555/files/14019192043.pdf
    • https://cdn.shopify.com/s/files/1/0437/1401/9496/files/wedekesiwowanavevetarexo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6076/3555/files/97181880093.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000088cc.bin
a5732ff5c86c2729187d34ab5a72ae281d9725151abc146e4aacbc822b9af96f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x88CC 21652 bytes
font_00_sfnt_off000053a4.bin
eb862b97145771919c7a8b969f399828fb4a963fcf37bcb8aa8f7f93d03eeb24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53A4 5100 bytes
font_01_sfnt_off00006513.bin
c6009979fddef46aa0bb81c419376611a9dbfbd655aeeaf7ac0057e288bacfc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6513 10380 bytes

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