Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed987fbd4590da7…

MALICIOUS

PDF

54.4 KB Created: 2020-09-08 06:55:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b37e7b39eeb826685cac95ce706ac44c SHA-1: d8543bb136599b453aff14417c977dc87b5cd783 SHA-256: bed987fbd4590da75395c38e204c97cc19e52af5de9428580413bc55fc21003b
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/wix?keyword=rmc+batching+plant+pdf'. This URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. The document body, though heavily obfuscated, contains this URL, reinforcing its role in the attack. The PDF also exhibits characteristics of a link farm, suggesting a broader campaign to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/wix?keyword=rmc+batching+plant+pdf
    • https://static.usrfiles.com/ugd/145364_23b8dbc5ac57458c88f29f69f0571e0b.pdf
    • https://static.usrfiles.com/ugd/77941b_c88ade45bff94181b1ff5f3029b96927.pdf
    • https://static.usrfiles.com/ugd/f80014_963d55e9af3a4c169c161196434460c9.pdf
    • https://static.usrfiles.com/ugd/18122d_0a3265cc870c4d62919a857865b97da2.pdf
    • https://cdn.shopify.com/s/files/1/0429/5789/7882/files/project_64_1._7.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/xubimedobaropekerijaval.pdf
    • https://cdn.shopify.com/s/files/1/0434/3103/5032/files/67713359329.pdf
    • https://static.usrfiles.com/ugd/73f3b0_cfb354f14a6c4c2796285c31796a94cf.pdf
    • https://static.usrfiles.com/ugd/5c8b2f_5b79f91b9fd748ae8615793c6c4bd499.pdf
    • https://static.usrfiles.com/ugd/ebbcbd_10753bf7e26c468aa5ddfd69b19c8386.pdf
    • https://cdn.shopify.com/s/files/1/0427/9789/1751/files/33496167017.pdf
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/87033965395.pdf
    • https://cdn.shopify.com/s/files/1/0437/6746/4093/files/jomulowenomune.pdf
    • https://cdn.shopify.com/s/files/1/0434/2090/9718/files/sears_garage_door_opener_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0461/6578/6776/files/88328639072.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_off00009602.bin
3be5df128f61a2877400a43ab6a75b5693fbf50d5d32afae46bdbc166a13b8b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9602 5444 bytes
font_01_sfnt_off0000a865.bin
62df1bab6d0b67ac984df931af0481d5060d83c26755979f050b3b739076797f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA865 10516 bytes

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