Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0112062b0d67fa1…

MALICIOUS

PDF

41.8 KB Created: 2020-08-21 11:33:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d15fcbe88e17f378b6bdebeefdeabed7 SHA-1: f49ba077eb2f2323efd5fa6f8bd8a4f1d5b03bf7 SHA-256: b0112062b0d67fa1e7da0ba5190a5b0a6e4e7e03e41c7e56ee944e82cff31a44
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=shin+chan+game++now'. Additionally, a PDF link farm heuristic indicates the document is designed to host numerous external PDF links, likely for SEO manipulation or to distribute further malicious content. The document body, though partially corrupted, contains the malicious URL and references to a game, suggesting a lure for users to click the link. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=shin+chan+game++now
    • http://dadasezim.nowwwriters.ca/uploads/1/3/1/1/131164278/8531942.pdf
    • http://vanogore.oywv.org/uploads/1/3/0/7/130776330/2846c24a68.pdf
    • http://daneki.trailcoffeecompany.com/uploads/1/3/2/6/132681790/nofumobana_jaraza_kejopa.pdf
    • http://files.dreamcatchers.travel/uploads/1/3/0/8/130814535/kitejigokubinovovok.pdf
    • http://files.wilcoprevention.org/uploads/1/3/1/4/131437740/29b296.pdf
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/fomopedelul.pdf
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/pedadogotisixojoteletisa.pdf
    • https://cdn.shopify.com/s/files/1/0438/2582/3904/files/68134424434.pdf
    • https://cdn.shopify.com/s/files/1/0428/1758/5308/files/platform_block_heel_peep_toe_shoes.pdf
    • https://cdn.shopify.com/s/files/1/0450/9827/0885/files/psychology_11th_edition_myers.pdf
    • https://cdn.shopify.com/s/files/1/0432/6821/0852/files/cape_town_convention_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/antonin_artaud_heliogabalus.pdf
    • https://cdn.shopify.com/s/files/1/0459/3228/2023/files/17574537827.pdf
    • https://cdn.shopify.com/s/files/1/0429/3279/7603/files/37350092796.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/muvamememeletomub.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_off00005e48.bin
e5be3733dbf4ed51f0cd3f38de134df48d31061b5f78eed94a855c4bdd0e35bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E48 5104 bytes
font_01_sfnt_off00006f8a.bin
05283fb53a80228d18cf5d408cf936ef8c9b9337f24dacb1cb58491a7b04dbae
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8A 13984 bytes