Malicious PDF — malware analysis report

Static analysis result for SHA-256 937fc8837ab220ff…

MALICIOUS

PDF

41.2 KB Created: 2020-09-01 07:59:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76398825d1ba852ae9ad073ba64db65c SHA-1: dbe1a5878d9f926054aae9e83eeb9b8dd740defa SHA-256: 937fc8837ab220ff9407ae5f0520176434d5abee56ce587ea8b0052c72ae04e4
120 Risk Score

Malware Insights

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

The PDF file contains a deceptive title and numerous embedded links, masquerading as a download for 'Whatsapp video song hd'. One of the primary links, 'https://ttraff.cc/wix?keyword=whatsapp++video+song+hd', points to known malicious redirector infrastructure. The file also exhibits characteristics of a link farm, with many external PDF links, suggesting a broader campaign to distribute malicious content or engage in SEO manipulation for malicious purposes.

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/wix?keyword=whatsapp++video+song+hd
    • https://static.usrfiles.com/ugd/b42fd6_0b0343f12468447b84ca25692b7d4e0f.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_c8f696241ea64a3eb00c34cc152aebe0.pdf
    • https://static.usrfiles.com/ugd/12daa7_9cebb4a47ed64072a9bdabc56ea2b872.pdf
    • https://cdn.shopify.com/s/files/1/0440/5359/4277/files/devogamisojot.pdf
    • https://cdn.shopify.com/s/files/1/0430/3775/3501/files/tobemanodokawolexojazo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7991/files/36704735257.pdf
    • https://static.usrfiles.com/ugd/89c6ad_59cf7354d36f4e2490cb8daff98c9622.pdf
    • https://static.usrfiles.com/ugd/3aca14_39e35f3757114cb9aafc68e6f4caa77d.pdf
    • https://static.usrfiles.com/ugd/3649d2_962bd2fbb3c14d12af0723f2feb350c0.pdf
    • https://static.usrfiles.com/ugd/dad90e_dbd8e752a8e543bbbb86d30055665fbc.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/7400168276.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/10008763939.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/tativebutemuzapujijuga.pdf
    • https://cdn.shopify.com/s/files/1/0438/4771/2928/files/ninawipezoxubekigux.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_off00006416.bin
053e444c3031bd0559193fbd5a6bd29029f54021e564b269057a94649ab50a77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6416 5164 bytes
font_01_sfnt_off000075c0.bin
1c15ef6ca50e4f682e37594a15e9de15698a735fbf165a47e4bdb8168adc2e3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75C0 10112 bytes

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