Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e8ee9459aab0c89…

MALICIOUS

PDF

45.9 KB Created: 2020-08-25 07:08:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45023ec2a25086c1c0c90fcabd2f576d SHA-1: 5d85062366882fb673b0804cbaee0f67d93da58c SHA-256: 4e8ee9459aab0c8973ce1083eb578fc808ec45b22903d845587b09317c7b3fce
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a reference to the malicious URL. The presence of numerous external links suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.

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=causes+of+ww2+pdf
    • http://movirane.salonnova.hk/uploads/1/3/1/4/131406390/86ca3.pdf
    • http://biroz.houseofblackart.com/uploads/1/3/1/3/131383483/vifed-bobudufedorago-kububijipu-xovexozoxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9799/7991/files/55391374666.pdf
    • https://cdn.shopify.com/s/files/1/0432/8987/0491/files/kagotutiv.pdf
    • https://cdn.shopify.com/s/files/1/0435/9657/8979/files/bejodarebopap.pdf
    • https://cdn.shopify.com/s/files/1/0435/6685/8408/files/energy_conservation_in_hvac_systems.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/31672788206.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/nixedo.pdf
    • https://cdn.shopify.com/s/files/1/0440/2587/2549/files/70412253199.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/4667955956.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/wovizaxidup.pdf
    • https://cdn.shopify.com/s/files/1/0445/7309/8143/files/cintaku_bertepuk_sebelah_tangan_dewa_19.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_off0000786e.bin
61b456322a26c8e6afa57b0446b0acce6f606560ac03ab367a82a8d1c2089530		 pdf-font-stream PDF embedded font (sfnt) at offset 0x786E 5036 bytes
font_01_sfnt_off000089c0.bin
01e0d08cca1353df3d0a7c22f66af99ad01d8f161cd6075ea985a6b47e81670f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89C0 9876 bytes

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