Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc68d25f4c2bcc3…

MALICIOUS

PDF

45.7 KB Created: 2020-07-31 19:59:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cfc2b06355d687c26978c054b532a26 SHA-1: d0479497395e32b036f3f61e38f5cf7568a640e4 SHA-256: 1cc68d25f4c2bcc3a8a95d60a79c39b6cbf8e1f209b262e76dda246fbce8b4e1
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=canon+power+shot+s2+si', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the target URL, suggesting a lure to a malicious site. The primary attack pattern involves directing users to malicious infrastructure via embedded 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.ru/pify?keyword=canon+power+shot+s2+si
    • http://files.storytimestamps.com/uploads/1/3/1/8/131857920/nomosokiwufusozodezu.pdf
    • http://files.scottcherney.com/uploads/1/3/0/7/130775304/44991.pdf
    • http://files.yogawithsarah.org/uploads/1/3/1/3/131380341/5230372.pdf
    • http://files.infinitecreative.com/uploads/1/3/0/9/130969377/30da554ccf34881.pdf
    • https://cdn.shopify.com/s/files/1/0436/8600/2843/files/kemum.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/mikuwimozomo.pdf
    • https://cdn.shopify.com/s/files/1/0437/5481/5640/files/satujegonupuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/beradifojasel.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5833/files/dotazume.pdf
    • https://cdn.shopify.com/s/files/1/0433/9128/7461/files/32931047976.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/zimurakizobutobozosa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/24781123544.pdf
    • https://cdn.shopify.com/s/files/1/0440/3567/0166/files/jokuwajarofavekajojigova.pdf
    • https://cdn.shopify.com/s/files/1/0431/1321/8210/files/jejex.pdf
    • https://cdn.shopify.com/s/files/1/0438/6865/1680/files/57178476923.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_off0000680d.bin
4f3337bf03546e14bdbd76214cf72cbd198d9f1c45bc1a5ddc52d49059c3eee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x680D 5004 bytes
font_01_sfnt_off00007917.bin
5814cfbe6e60fdebf424692f9580578a542925b22bb907409a2075ba10524d07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7917 15932 bytes

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