Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aad671086f7668d…

MALICIOUS

PDF

44.9 KB Created: 2020-08-13 21:29:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7782a2127d6b38b350c586fcca8d7260 SHA-1: 68608aaa5fbeedde2cf3b5345d81ea47435aeae1 SHA-256: 8aad671086f7668de444b1c34d68fedcf74dacbec1b67259721ab5c627f0f150
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=blood+type+0+food+list+pdf'. The document body, though heavily obfuscated, appears to be a lure related to a 'blood type 0 food list', likely intended to trick users into clicking the malicious link. The presence of a link farm suggests an attempt to game search engine results for increased visibility and potential victims.

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=blood+type+0+food+list+pdf
    • http://kigewadux.beyondnailartsupply.com/uploads/1/3/1/0/131070718/jukogulenul.pdf
    • http://files.virtu.rocks/uploads/1/3/1/8/131856619/zipatetanef.pdf
    • http://files.greatharvestclackamas.com/uploads/1/3/1/3/131383657/8429704.pdf
    • https://cdn.shopify.com/s/files/1/0429/6150/2362/files/37346240364.pdf
    • https://cdn.shopify.com/s/files/1/0438/5567/5542/files/20802582509.pdf
    • https://cdn.shopify.com/s/files/1/0429/2807/9004/files/qaseeda_burda_shareef_full.pdf
    • https://cdn.shopify.com/s/files/1/0433/2870/0571/files/alayam_bahrain.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/19288986090.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3304/files/mujepamak.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/mekorigugegife.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/47802698691.pdf
    • https://cdn.shopify.com/s/files/1/0431/5286/7494/files/xefadapojepepepur.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96258555683.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_off000072bf.bin
ed9e7ca8fc6fe0bc9ff0b7abfc935e7dcb538188b97b9a398bdf75fcac9fb320		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72BF 5020 bytes
font_01_sfnt_off000083ff.bin
888b7d674c7211456df7c30d04f6a9491279e9cd026d310b425e5336621a8a78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83FF 10264 bytes

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