Malicious PDF — malware analysis report

Static analysis result for SHA-256 442d2ebe35d6eda7…

MALICIOUS

PDF

49.0 KB Created: 2020-08-16 11:52:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0abfe5f39ae9d4dcc836e06d02c89932 SHA-1: 3d4c700f01429c47c3c626f6f0e01cbb75bec863 SHA-256: 442d2ebe35d6eda7b1689f0dcd0dc1bf7ee13d1868babf4555e3e5cb3e3550da
128 Risk Score

Malware Insights

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

The PDF contains a link disguised as a download for cracked software, which redirects to a malicious URL. The document body and heuristics indicate a lure to a malicious redirector. The presence of numerous external PDF links suggests a link farm intended to improve search engine ranking for malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=axure+rp+9+full+crack
    • http://files.realmilklexington.com/uploads/1/3/0/7/130775588/renavoka.pdf
    • http://kisusaket.amvetspost29.com/uploads/1/3/0/8/130873863/sapoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/9417/8982/files/jotevijibavesovozo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/juxoxeduxirixavenafexuwad.pdf
    • https://cdn.shopify.com/s/files/1/0436/5520/0918/files/2020_tamil_calendar_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/kijawobuworewufozuxoju.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/sawirufagasevofiwam.pdf
    • https://cdn.shopify.com/s/files/1/0437/6811/9445/files/12547038333.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89832202682.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_off0000795c.bin
ca487ae30873564fbcbd0e42991764ec55bc1eac777a3d24ee1acabd00776aff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x795C 5108 bytes
font_01_sfnt_off00008ad5.bin
4cc219508deec3acaf030415029b3845668b264971dc66206d3b1dfd56821313		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD5 14048 bytes

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