Malicious PDF — malware analysis report

Static analysis result for SHA-256 be42533a164ac66b…

MALICIOUS

PDF

50.2 KB Created: 2020-07-31 10:43:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54863dbb8a97932fbf1126f981590544 SHA-1: fadca7d0bafe92bb6ca023fc453ae590877dc626 SHA-256: be42533a164ac66b0902bb9a8355c6b2cceb30c7e8e3cb63bae7171317d4997d
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a redirector URL associated with malicious activity. The document body, though heavily obfuscated, suggests a lure related to a 'cloche hat pattern pdf'. The presence of a link farm heuristic further indicates an attempt to distribute malicious content or manipulate search engine results.

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=cloche+hat+pattern+pdf
    • http://files.amaakarate.com/uploads/1/3/1/4/131453022/fojiloluxovopa.pdf
    • http://files.isuministries.org/uploads/1/3/1/3/131398250/dakirofe.pdf
    • http://files.breedingforthefuture.com/uploads/1/3/2/6/132681566/sutavumuz.pdf
    • https://cdn.shopi
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/bexezix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xewujixamugovaginebutomo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/moronepoxogobakefusowima.pdf
    • https://cdn.shopify.com/s/files/1/0433/2191/7598/files/remekuzixu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/midozago.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/48318769238.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44603331863.pdf
    • https://cdn.shopify.com/s/files/1/0437/3138/6529/files/66241389506.pdf
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/kunasupidofodu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3942/2626/files/53558100698.pdf
    • https://cdn.shopify.com/s/files/1/0432/0064/3236/files/tegifuramubuxiwimo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vufofabiziterefabul.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_off0000883e.bin
96ca0a1c1d4d0e113802e9896cfa78ee105b16bf944f0a9e4d65519d1d2b7db8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x883E 4828 bytes
font_01_sfnt_off0000989b.bin
5de3ea75db360a61f96af707cb42eadd71fb7f40df70b8984eb272208feb8d49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x989B 10228 bytes

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