Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dced7e4c764cac1…

MALICIOUS

PDF

123.1 KB Created: 2020-07-30 07:42:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4df4539f27e6067a616150c3b0646f37 SHA-1: b1010c7a7d96a381a36a59547fb2ec4acb1cb363 SHA-256: 7dced7e4c764cac1de0dd4fa28759ced3771d35bf5a3f4136f2a0155cb5a8702
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to a '1611 king james with apocrypha pdf'. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or redirection attempt. The primary IOC is the malicious redirector URL.

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=1611+king+james+with+apocrypha+pdf
    • http://files.shoptempus.com/uploads/1/3/0/7/130775432/jarokifotoxabivamilo.pdf
    • http://files.themaskcaraartist.com/uploads/1/3/1/0/131070030/wegufozoxalodu_somiposogelom.pdf
    • http://files.camphillvillage5k.org/uploads/1/3/1/8/131857602/6dcd10a67c96.pdf
    • http://files.seineboatinn.com/uploads/1/3/2/6/132695701/bomadet.pdf
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/28068295732.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/metonesatedugow.pdf
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/65764502340.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0293/files/48759571808.pdf
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/mufawirutigo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5183/5811/files/getovidajamimevurud.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/19114919119.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/30148743080.pdf
    • https://cdn.shopify.com/s/files/1/0431/8612/7009/files/rubobig.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/mifejijaxulugibiku.pdf
    • https://cdn.shopify.com/s/files/1/0434/5593/8725/files/73763660391.pdf
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/95266770591.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_off00019b6e.bin
e853e0b6deacda7900941c5a1900100fc932393c4e9f9452e82cbd3cab2449c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19B6E 5768 bytes
font_01_sfnt_off0001aef7.bin
bdd044c71589bd1032b586adbd8ae6ab4b3be9f4f5c080daf17c2548389f6930		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AEF7 14200 bytes

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