Malicious PDF — malware analysis report

Static analysis result for SHA-256 3349a7241927e39f…

MALICIOUS

PDF

46.5 KB Created: 2020-08-21 14:13:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63dd74bc9d92bb44e5147df73c66c83a SHA-1: 190f49cfe7e9c35e0c575f9a2af395a093e8c97f SHA-256: 3349a7241927e39fbe87776eabf136723419839f40d229dd9f1462e1031513e7
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector. The document body text and heuristics indicate a lure to click a download button, which likely leads to the malicious redirector. The redirector is then used to funnel the user to further 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=information+report+format+sample
    • http://files.gordonoyer.com/uploads/1/3/0/8/130874422/sonezotamizunirawul.pdf
    • http://files.terricohn.com/uploads/1/3/1/3/131383665/2496089.pdf
    • http://zokilasum.sfcafebroadway.com/uploads/1/3/1/6/131606731/c3469753828d2cf.pdf
    • https://cdn.shopify.com/s/files/1/0438/4528/8093/files/roziwejiretekilob.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/photosynthesis_and_chemiosmosis_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/tudefajorelebutazi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4831/files/godaddy_smtp_settings.pdf
    • https://cdn.shopify.com/s/files/1/0437/8948/4190/files/8700483066.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37357510366.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/kugawanozibod.pdf
    • https://cdn.shopify.com/s/files/1/0464/1180/8936/files/jodha_akbar_movie_video_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0444/2993/4758/files/practical_english_usage_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/4030/7362/files/54073108318.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdf
    • https://cdn.shopify.com/s/files/1/0428/9101/8396/files/84977897308.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_off0000730c.bin
9f1dba332bfa4c49fded2391e4e51f12a7ae1e54c043b06d7f3bce078d4f18b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x730C 4984 bytes
font_01_sfnt_off000083dc.bin
e9de7670654a2dbdab8cbadeb5a172a9ff8ae3d538e23d9d8085ebd80dec0516		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83DC 12716 bytes

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