Malicious PDF — malware analysis report

Static analysis result for SHA-256 f00acb78e3addb59…

MALICIOUS

PDF

37.3 KB Created: 2020-08-04 17:48:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45f70c6bbbd20ba857c94d4045e81ead SHA-1: 0172b3f1c7c1db6399532c51b82bb3a32c75332e SHA-256: f00acb78e3addb59527148eb3ec3b4e00a358235370ca51ee3e72b631ab4a273
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=exercise+verb+to+be+present+simple+pdf'. The document body, though heavily obfuscated, also contains this URL and other links, suggesting a link farm or redirection tactic. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick the user into clicking a link to initiate a malicious download or visit a compromised site.

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=exercise+verb+to+be+present+simple+pdf
    • http://files.petoskeydrones.com/uploads/1/3/0/7/130775432/f7ba8a5bae729.pdf
    • http://files.ahartymeal.ca/uploads/1/3/0/9/130969389/guzajuta-tipikajogisuk.pdf
    • http://files.jadeselevation.com/uploads/1/3/1/3/131384368/5299360.pdf
    • http://files.zejmusic.com/uploads/1/3/2/6/132695525/rutalurelimi-ramozedepupix-kexito.pdf
    • https://cdn.shopify.com/s/files/1/0428/5458/0391/files/10889046461.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botudurodakokebavexosox.pdf
    • https://cdn.shopify.com/s/files/1/0431/6105/9482/files/33883447516.pdf
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/bolokopukuzofule.pdf
    • https://cdn.shopify.com/s/files/1/0440/6129/4757/files/nakelesas.pdf
    • https://cdn.shopify.com/s/files/1/0429/6117/4684/files/43047726332.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/kesanajuridotokotixu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/ditoruwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3250/files/82057952573.pdf
    • https://cdn.shopify.com/s/files/1/0429/1349/7247/files/public_speaking_definition.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/71391600254.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0293/files/nufasumifidibumizatux.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_off000053a0.bin
ed2b3646c8814368eed5f5a857b0a4f8cd1cd1f0d9d0c4b3ced983a6a18c5215
pdf-font-stream PDF embedded font (sfnt) at offset 0x53A0 5316 bytes
font_01_sfnt_off000065ac.bin
9335d4552b2e8c406339dd762ba887e5d0dd6941c5427ece2e47d10eabde47e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x65AC 10120 bytes