Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc1e4116ae6004c8…

MALICIOUS

PDF

41.8 KB Created: 2020-08-03 17:29:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 429855c514403701180d2652371e1d62 SHA-1: 160a5c17459e1d07709be5348ed2416ffef1c1a0 SHA-256: cc1e4116ae6004c8a558c33a8c40f049caf00e9d561c9565c76529ac374999a4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=shoulder+dystocia+management+pdf'. The document body, though heavily obfuscated, also contains this URL, indicating an attempt to lure the user into clicking it. 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=shoulder+dystocia+management+pdf
    • http://files.bodyoilsbybrenda.com/uploads/1/3/1/4/131483009/7934868.pdf
    • http://files.sugar-coated.org/uploads/1/3/1/4/131484029/mojasodav_lipaporam_ramoguzer_zademizimetex.pdf
    • http://files.beyondthegap.org/uploads/1/3/0/7/130739658/samitimizovanisel.pdf
    • http://files.capitalareafoodcouncil.org/uploads/1/3/1/3/131380337/ripaxasawoxoxosu.pdf
    • http://files.ammosfilms.eu/uploads/1/3/0/7/130739789/gisomu-tozomogasemos.pdf
    • https://cdn.shopify.com/s/files/1/0434/2883/9586/files/33800608436.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/59970877334.pdf
    • https://cdn.shopify.com/s/files/1/0431/5833/9733/files/xoruge.pdf
    • https://cdn.shopify.com/s/files/1/0428/6113/3990/files/2729208941.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/nakarobawobod.pdf
    • https://cdn.shopify.com/s/files/1/0432/6572/0486/files/nejelanovuwixarokadela.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0743/files/dulugivusu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6769/3474/files/90129925119.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1734/files/suxopaxuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3716/files/38790219301.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1573/files/pefetinepagaru.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_off0000641c.bin
747a9b3733c466791f8222a4560a7ce1425d4933ef8a2f935f5f966a23c3ad25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x641C 5776 bytes
font_01_sfnt_off000077a9.bin
98f292cce98aa06679b31297a2712082d4d92a9e11615032c388b98ed72fe781		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A9 10140 bytes

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