Malicious PDF — malware analysis report

Static analysis result for SHA-256 f844426d2c58f847…

MALICIOUS

PDF

41.1 KB Created: 2020-08-12 10:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9299ea73f3e3fcd1447cbfd339bd8ca7 SHA-1: c8d69c6779000049951c346280be793f7774aa8c SHA-256: f844426d2c58f847fef817e8bba2853b1e03df32d12ecddfef24731dada6634f
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text related to 'music crossword puzzles pdf' and includes the primary malicious URL. This suggests a social engineering lure to drive traffic to a malicious site, likely for further exploitation or malware delivery.

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/wb?keyword=music%20crossword%20puzzles%20pdf
    • http://juviv.wppsfete.com.au/uploads/1/3/0/8/130814328/1a6f27d8f94.pdf
    • http://files.mariaburtonart.com/uploads/1/3/0/7/130775156/c28011.pdf
    • http://files.cheltenhamelim.org/uploads/1/3/0/7/130738805/vesabarogisega_fefezema.pdf
    • http://files.vikingsoul.net/uploads/1/3/2/7/132740951/paremur.pdf
    • https://cdn.shopify.com/s/files/1/0431/0981/0343/files/65399374237.pdf
    • https://cdn.shopify.com/s/files/1/0428/5507/1900/files/sleeping_lotus_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/adosphere_1_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706
    • https://cdn.shopify.com/s/files/1/0436/2511/9904/files/wananiwosemukoz.pdf
    • https://cdn.shopify.com/s/files/1/0439/0669/5320/files/61847969145.pdf
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/la_boite_a_merveille_analyse_complte.pdf
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/89126348563.pdf
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/47082808670.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7351/files/78575570791.pdf
    • https://cdn.shopify.com/s/files/1/0432/5185/9611/files/sewoso.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_off000062d2.bin
b90c22829fbc516444d56269a4f748fdba91ef97633d684376c224eb83b110c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62D2 5084 bytes
font_01_sfnt_off00007451.bin
23d7574c57c3df441b34d70b0409e76bd04b75bb3c6f3c89e8863a9365c47f67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7451 10512 bytes

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