Malicious PDF — malware analysis report

Static analysis result for SHA-256 829075d7b7e58638…

MALICIOUS

PDF

47.2 KB Created: 2020-08-18 23:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69610fb634c020703811b36d07fb1f7b SHA-1: 1ddc542772d00349cb2da44ecfef11918e86ca97 SHA-256: 829075d7b7e58638249d665706cd42e8f5348aab6bb273ca2c15b567ce7ba834
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a known malicious redirector. The document body also contains a URL that resolves to the same redirector. This suggests the primary purpose is to distribute malicious content or lead users to phishing sites through a chain of redirects.

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.cc/pify?keyword=tubemate+latest+version++for+android+2018
    • http://files.kn-pilates.com/uploads/1/3/1/6/131606069/darigenenibelur_saterizif_zumirujerodiv_gokob.pdf
    • http://files.ramblinadventureclub.com/uploads/1/3/0/8/130813781/495262adcd3a5.pdf
    • http://rawetebeb.sabahhomestaykualapenyu.com/uploads/1/3/0/8/130874422/wewetizili-ketomamo-litaruvud-susogizum.pdf
    • http://files.cubrajackpot.com/uploads/1/3/2/6/132683135/sajavabut.pdf
    • https://cdn.shopify.com/s/files/1/0440/4301/0213/files/bible_quiz_questions_and_answers_from_matthew_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4295/5687/files/68431129536.pdf
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/50421194621.pdf
    • https://cdn.shopify.com/s/files/1/0434/1301/2630/files/ardour_manual_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15900382268.pdf
    • https://cdn.shopify.com/s/files/1/0436/4576/3744/files/74941156078.pdf
    • https://cdn.shopify.com/s/files/1/0431/2779/9970/files/3d_scanner_apk_samsung.pdf
    • https://cdn.shopify.com/s/files/1/0433/5514/4347/files/tally_voucher_entry_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/6638/3768/files/things_i_wish_i_d_known_before_marriage.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7310/files/80612895686.pdf
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/nokape.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2755/files/daxeta.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_off0000795e.bin
3b416d4b06530df11cb29e2257e475a5484d19759585a2668f1a53b51a8c748b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x795E 5720 bytes
font_01_sfnt_off00008cc3.bin
47506a4dab222f9af295a78b94a31e165f7d5fdaff64de0272f4b4121db03bc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC3 10260 bytes

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