Malicious PDF — malware analysis report

Static analysis result for SHA-256 46ddf85b107f5a02…

MALICIOUS

PDF

46.6 KB Created: 2020-08-31 18:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fb679eebfeac1cb543f1230514d0ef3 SHA-1: c577216ae8bc1ec5b9b72aac8a43635af5d1ab81 SHA-256: 46ddf85b107f5a027353f4432e9c9f0745db35d0c94fffff16e2f6044e30dc72
120 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site under the guise of an 'Android video audio boost' utility. The document also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm or SEO poisoning tactic to obscure the primary malicious URL. No scripts were extracted, and the document body is heavily obfuscated.

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.com/wix?keyword=android+video+audio+boost
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38970143778.pdf
    • https://cdn.shopify.com/s/files/1/0431/7285/5957/files/16946937484.pdf
    • https://cdn.shopify.com/s/files/1/0433/9813/5966/files/homer_i_am_so_smart.pdf
    • https://static.usrfiles.com/ugd/bfbc46_d2099441a7d74d3f9e0c09a4ef567842.pdf
    • https://static.usrfiles.com/ugd/1f2646_21cc4e36be4b459aa3840c0169f418bc.pdf
    • https://static.usrfiles.com/ugd/565485_d1380069309d42a797d8539f7c88ed01.pdf
    • https://cdn.shopify.com/s/files/1/0429/4931/2666/files/jofokogiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/38802598449.pdf
    • https://cdn.shopify.com/s/files/1/0429/3787/6639/files/ritozusakufuwixotara.pdf
    • https://cdn.shopify.com/s/files/1/0439/1393/7064/files/incinerator_specification_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/inter_ethnic_conflict_in_ethiopia.pdf
    • https://cdn.shopify.com/s/files/1/0459/2412/2773/files/24927499973.pdf
    • https://cdn.shopify.com/s/files/1/0431/3553/3218/files/lupimevusibuzufujute.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_off000078c1.bin
babd591ed5cdefed689e4d071788130b0789690f4f4e805c1de14d1badc80474		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78C1 4976 bytes
font_01_sfnt_off000089bc.bin
099941cf7e300bdcc227ebc473641c29f06cdc6792a17efae70c293b85c3980d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89BC 10384 bytes

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