Malicious PDF — malware analysis report

Static analysis result for SHA-256 308e1cf341e730bf…

MALICIOUS

PDF

44.5 KB Created: 2020-08-28 06:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54db02d92db29e28e27c42bea5843328 SHA-1: a70d0d3bd66c2bf1d5366771a0f861f23e6e8e45 SHA-256: 308e1cf341e730bf27ae4ac4b58770d4dec0f3a2b14cc008b9e307d6bd59fc47
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, embedding numerous external links. One of these links, https://ttraff.ru/pify?keyword=fallout+4+contraptions+guide, is identified as a malicious redirector. The document body contains obfuscated text and references to 'Fallout 4 contraptions guide', likely a lure to entice users to click on the embedded links.

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=fallout+4+contraptions+guide
    • http://files.siboprocourse.siboinfo.com/uploads/1/3/1/8/131857193/3342057.pdf
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/empire_total_war_england_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/24542389715.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/51738584332.pdf
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/hvac_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/88318250178.pdf
    • https://cdn.shopify.com/s/files/1/0435/4922/9220/files/5531654533.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0743/files/73593668925.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/review_payment_information_apple_id.pdf
    • https://cdn.shopify.com/s/files/1/0429/0464/9884/files/kowanav.pdf
    • https://cdn.shopify.com/s/files/1/0434/5869/1232/files/71489726019.pdf
    • https://cdn.shopify.com/s/files/1/0429/2204/9695/files/lipujesu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2186/7930/files/mofugepimubapuwitud.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_off00006f32.bin
f013bdb5081933b751e33e04f3c299a1196d4873343553d46b22653999faa1eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F32 5284 bytes
font_01_sfnt_off0000813d.bin
034a2b763c0d60d611a50b73667b40e2c90ac796c0129a623ff25efeef14a957		 pdf-font-stream PDF embedded font (sfnt) at offset 0x813D 10540 bytes

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