Malicious PDF — malware analysis report

Static analysis result for SHA-256 abd9e7b3cf677abc…

MALICIOUS

PDF

47.5 KB Created: 2020-07-31 13:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 452f0d7c2769b4190823c15d8f375616 SHA-1: f5649a7bfd74b04eb324232d1c9610a1dfe7ded7 SHA-256: abd9e7b3cf677abc8534ca30a7be160b2f3881c6e0afd387cf2e524c1bbcbc93
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, identified as a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=vocational+guidance+theories+pdf', points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Vocational guidance theories pdf', suggesting a lure to trick users into clicking the malicious links.

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=vocational+guidance+theories+pdf
    • http://files.allseasonrider.com/uploads/1/3/1/3/131384136/samagujariraka.pdf
    • http://files.belmonthypnosis.net/uploads/1/3/1/4/131453592/1021687.pdf
    • http://files.mountainviewhairsheep.com/uploads/1/3/1/4/131437174/bepitemowe_wapub_gabutiwavaj_fidupopime.pdf
    • https://cdn.shopify.com/s/files/1/0437/1536/2984/files/66398941346.pdf
    • https://cdn.shopify.com/s/files/1/0437/0395/9720/files/pavesuzufapilaxozijikusa.pdf
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/zotilumulowebub.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/68025855256.pdf
    • https://cdn.shopify.com/s/files/1/0431/8347/2802/files/72034104090.pdf
    • https://cdn.shopify.com/s/files/1/0433/8201/4108/files/matuvi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0514/files/kapumot.pdf
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/74757448839.pdf
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/77669077978.pdf
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/95503197285.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3760/files/83377862574.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/16873474370.pdf
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/vazagos.pdf
    • https://cdn.shopify.com/s/files/1/0428/8351/4527/files/betomufurototitonojex.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/
    • https://cdn.shopify.com/s/files/1

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c19.bin
ecf4d84f88812545a3cead290747381ce6a9bb3e198f175a8300e903c2259e1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C19 5264 bytes
font_01_sfnt_off00008de8.bin
3e48e89ce1a0de704ffcbc9d500993b944015f99ec1e91176f82d75f2cc1ec27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE8 10228 bytes

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