Malicious PDF — malware analysis report

Static analysis result for SHA-256 d021e6d82af5412f…

MALICIOUS

PDF

37.3 KB Created: 2020-07-27 12:32:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7507a8cafdfeb872cc3dd3e09a470a51 SHA-1: ae3ed1848704d3780b7b5fd689b7f445e54c134a SHA-256: d021e6d82af5412f7f6aa3b43c892ff7e69ae9df759fad5f98aa202ba64b0ed5
120 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 a link farm hosted on cdn.shopify.com. One prominent link, 'https://ttraff.ru/pify?keyword=bbc+iplayer+apk+latest', is identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain keywords related to the lure, suggesting an attempt to trick users into visiting 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.ru/pify?keyword=bbc+iplayer+apk+latest
    • http://files.moundsviewxc.com/uploads/1/3/0/7/130775848/kefokafi-safojivikikalo.pdf
    • http://files.thesepticinspector.com/uploads/1/3/1/8/131856877/bibago.pdf
    • http://files.medexnet.nl/uploads/1/3/0/8/130874161/4ac8332.pdf
    • http://files.huntergathereronline.com/uploads/1/3/1/4/131454581/7139406.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/finanurobuzoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/bexisaruzebalekajeba.pdf
    • https://cdn.shopify.com/s/files/1/0435/2232/6696/files/62616850895.pdf
    • https://cdn.shopify.com/s/files/1/0438/2762/6134/files/rubofodifezofuwin.pdf
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/35434142156.pdf
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/pifunexekutuzerodonixap.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/sidugozuxa.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3302/files/dolalekoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/42075763266.pdf
    • https://cdn.shopify.com/s/files/1/0438/2208/8354/files/92738119928.pdf
    • https://cdn.shopify.com/s/files/1/0429/4659/2924/files/54392227534.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/56691465155.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_off00005738.bin
7c4e9c6b6fee46ebad7c58d76c874ff9da8d063e7dae10b6856d4a8c823e91ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5738 4852 bytes
font_01_sfnt_off000067c6.bin
6fba7032a4bb7396edf24cf11f5d0ddb7c6e25e52bc5bde26251fad8a3b706b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67C6 9520 bytes

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