Malicious PDF — malware analysis report

Static analysis result for SHA-256 a696ddfd9d907815…

MALICIOUS

PDF

41.3 KB Created: 2020-08-19 14:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41864f7da3d0e29caef675cec8f6799c SHA-1: 1c5886c2f547cdb67f3150f7eb40467e18a440ad SHA-256: a696ddfd9d907815204ec95e506958a5b847eddc45c56c03e065614b7d916af4
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=photo+slideshow+ae+template'. Another heuristic flagged a large number of external PDF links, with 'https://cdn.shopify.com/s/files/1/0429/2778/4099/files/goxowejanarurowepo.pdf' being the first listed. The document body is heavily obfuscated but contains references to these URLs, suggesting a lure to external content that is likely malicious.

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=photo+slideshow+ae+template
    • http://zejafu.folsomepoxy.com/uploads/1/3/1/3/131398252/a1d65967.pdf
    • http://vupuv.willucaauto.com/uploads/1/3/0/8/130874247/wagogilusakeru.pdf
    • http://files.bethelchurchfw.com/uploads/1/3/0/7/130775934/joxulewipazawil_jepiberunado.pdf
    • http://files.ribcityshootout.com/uploads/1/3/1/4/131436978/b2989f0c.pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4099/files/goxowejanarurowepo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8732/2522/files/barriers_to_change_management.pdf
    • https://cdn.shopify.com/s/files/1/0443/8907/3062/files/eliogabalo_artaud.pdf
    • https://cdn.shopify.com/s/files/1/0428/6549/2127/files/convert_to_word_mac_automator.pdf
    • https://cdn.shopify.com/s/files/1/0432/0290/4222/files/77800344369.pdf
    • https://cdn.shopify.com/s/files/1/0435/6921/7699/files/25489008012.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/6669466053.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/mythical_creatures_list_a_z.pdf
    • https://cdn.shopify.com/s/files/1/0447/4988/1495/files/31245574933.pdf
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/58701326598.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_off000064a8.bin
38de56ba468be45f4db264c8634dd270078b0b919834ea1e1c39ba2dde1d6f2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A8 5196 bytes
font_01_sfnt_off00007645.bin
af96988e7e024f378325fa33c5223b6faa89a80c6502c2da9ada68e5a75158e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7645 9868 bytes

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