Malicious PDF — malware analysis report

Static analysis result for SHA-256 f786835f219f1c3b…

MALICIOUS

PDF

58.8 KB Created: 2020-07-26 03:41:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65f877cace0d96f7c9f1e94192bee3da SHA-1: e12497c1b6ce2cc089e63c2adeefe4f664af794b SHA-256: f786835f219f1c3b01313803545233f50c962baab8d535fc46080a7f6939a420
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, a technique often used for SEO poisoning or to direct users to malicious sites. One of the extracted URLs, 'https://ttraff.cc/pify?keyword=terminator+3++in+tamilyogi', is identified as a malicious redirector. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, suggesting it's not a typical user-facing document but rather a lure.

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=terminator+3++in+tamilyogi
    • http://files.gntc1.com/uploads/1/3/0/8/130814070/saduvar-lovofoxug-litatosawitimit-zufute.pdf
    • http://files.yardieting.com/uploads/1/3/1/1/131164351/abeecc88c4e.pdf
    • http://files.thenbamovement.com/uploads/1/3/1/4/131454297/ed0eb.pdf
    • http://files.hayslandsurveyor.com/uploads/1/3/0/7/130740571/lixepobire_tiwoxipel_tilip.pdf
    • http://files.westport.votersguide.info/uploads/1/3/1/4/131437037/kezuk_nizofolojujiliw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25346701784.pdf
    • https://cdn.shopify.com/s/files/1/0433/9115/6380/files/52696567162.pdf
    • https://cdn.shopify.com/s/files/1/0433/7054/5308/files/pibekanelopapokemiwot.pdf
    • https://cdn.shopify.com/s/files/1/0438/7281/3211/files/10656812.pdf
    • https://cdn.shopify.com/s/files/1/0433/2912/6550/files/desawedijo.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/92027584013.pdf
    • https://cdn.shopify.com/s/files/1/0430/3110/1603/files/15785908649.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/nuxedasokofowafa.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/70726487593.pdf
    • https://cdn.shopify.com/s/files/1/0434/3264/0664/files/77375350396.pdf
    • https://cdn.shopify.com/s/files/1/0435/3225/5392/files/zenagizapokinijaxanes.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/38080775272.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_off0000a9c5.bin
b2acaa0836fe75656b501769201e506060b2869fb4a95167b80b242a2bdc3bd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9C5 4828 bytes
font_01_sfnt_off0000ba18.bin
25ab4fbf6b8a83e083a12a91512d1cff23a96f21a10170a8b3761fb1de1b49f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA18 10512 bytes

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