Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a9025927a996da…

MALICIOUS

PDF

51.8 KB Created: 2020-08-01 19:09:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85c494d09efcf66939afab6c3d3a31a8 SHA-1: 0b3ace05dc25439d0eb70fb21434ff6afc13a203 SHA-256: a9a9025927a996da9c91d65ab2ee8b5c2414bbe3ee8fe50ed8f414c9ee563f94
140 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with redirectors or link farms. The document body text and embedded links suggest a lure related to 'Rurouni Kenshin episode 1' to entice users to click on these malicious URLs. The presence of a redirector link and a mass link farm indicates an attempt to drive traffic to potentially harmful sites.

Heuristics 4

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=rurouni+kenshin+episode+1
    • http://files.tothemoonandbackrabbits.com/uploads/1/3/1/4/131454216/mipigebutiv.pdf
    • http://files.awoodmadeco.com/uploads/1/3/0/9/130969967/5519886.pdf
    • http://files.foreverflagpoles.com/uploads/1/3/1/1/131163846/pegarifa.pdf
    • http://files.kidbookreviewer.com/uploads/1/3/1/4/131407111/perit.pdf
    • http://files.wewillservethelord.org/uploads/1/3/0/7/130776786/jugad.pdf
    • https://cdn.shopify.com/s/files/1/0428/4124/3814/files/90872143036.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/88075317933.pdf
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/zedidorek.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/lidelofakodutelira.pdf
    • https://cdn.shopify.com/s/files/1/0431/3615/5809/files/lukibotelegozokis.pdf
    • https://cdn.shopify.com/s/files/1/0434/2880/6808/files/71966937997.pdf
    • https://cdn.shopify.com/s/files/1/0432/0333/0208/files/28031075944.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/37792215245.pdf
    • https://cdn.shopify.com/s/files/1/0433/6022/3397/files/fudafokewakutegav.pdf
    • https://cdn.shopify.com/s/files/1/0439/1567/3752/files/tufufutovamu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2912/6550/files/zedemapomuwasexamipop.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
font_00_sfnt_off000081b5.bin
20f75e879ee350afde2ee944afb268e708623c3c40a9625ef715954ebd944124
pdf-font-stream PDF embedded font (sfnt) at offset 0x81B5 4728 bytes
font_01_sfnt_off000091ba.bin
e73bb63608ec93bd2444fae236e61f7a0af121f2ab4f357679b50d0fc1bd7144
pdf-font-stream PDF embedded font (sfnt) at offset 0x91BA 10028 bytes
font_02_sfnt_off0000b41d.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB41D 4324 bytes