Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fad63f30a6be029…

MALICIOUS

PDF

39.6 KB Created: 2020-08-25 05:44:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e8a55ae6246587ced4a41f40ff94090 SHA-1: 6a8895c8f0d2da1d40a623cfb2594acb00120dde SHA-256: 7fad63f30a6be029ea623f0275cd9489b215ce907f598604610d4e07f7a09d3f
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, specifically `https://ttraff.cc/pify?keyword=mindray+bc-+2800+hematology+analyzer+pdf`. The document body, though heavily corrupted, contains text suggesting it is disguised as a technical document about a medical analyzer, likely to entice clicks on the malicious links. No scripts were extracted from this sample.

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.cc/pify?keyword=mindray+bc-+2800+hematology+analyzer+pdf
    • http://jufov.chathamkentfashion.com/uploads/1/3/1/6/131606577/5b7aa20e748c.pdf
    • http://xogegu.rapturebibletruth.com/uploads/1/3/1/6/131607575/6f8f583.pdf
    • http://files.thecolororacle.com/uploads/1/3/1/4/131483305/gatijimusakelox.pdf
    • http://files.myvegestar.com/uploads/1/3/2/8/132815854/6eebd8ee4.pdf
    • https://www.absolutemed.com/
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/zojuberupitipux.pdf
    • https://cdn.shopify.com/s/files/1/0439/1695/1704/files/vofimuwamijenafa.pdf
    • https://cdn.shopify.com/s/files/1/0434/9716/0866/files/60869330212.pdf
    • https://cdn.shopify.com/s/files/1/0436/8013/7369/files/mobotikesupukalafi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4724/7263/files/boris_vian_froth_on_the_daydream.pdf
    • https://cdn.shopify.com/s/files/1/0433/1080/9256/files/55473035090.pdf
    • https://cdn.shopify.com/s/files/1/0434/0786/8060/files/53373322050.pdf
    • https://cdn.shopify.com/s/files/1/0433/4904/9499/files/post_office_nsc_pledge_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/1827/2423/files/87795054919.pdf
    • https://cdn.shopify.com/s/files/1/0438/8388/8808/files/active_and_passive_voice_download.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_off000057c4.bin
9b2b0a75e2d44fbb6c625c55c19699551b2a5cb5bda42928caa5c6a119c30b1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C4 6188 bytes
font_01_sfnt_off00006cbd.bin
8c7c03b7c23d05d96fa0c9b74e0402851d5de52a4e1faac07abde9896b366011		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBD 10728 bytes

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