Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9a4eff28193b200…

MALICIOUS

PDF

45.4 KB Created: 2020-08-14 21:21:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92d2d18ed2343dcb05a869ea86d151b3 SHA-1: cc30010c1275b0045bddd441a9c885ccfa41c4ee SHA-256: c9a4eff28193b200682c23aafaa120b025cc60d30394b9819c5408fc4c10a789
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This suggests a link farm or SEO poisoning attack, where the document is designed to lure users with a seemingly relevant topic ('Apache tomcat installation steps in linux pdf') to a malicious redirector. The primary malicious URL is https://ttraff.com/pify?keyword=apache+tomcat+installation+steps+in+linux+pdf, which is likely used to deliver a secondary payload or phish for credentials.

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/pify?keyword=apache+tomcat+installation+steps+in+linux+pdf
    • http://dokekoso.clonmanygenealogy.com/uploads/1/3/1/4/131407440/vafuwimexo_xetesabuzowek.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/nutadonogevegubobinu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4573/9941/files/marafozojezaxupepijozema.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/tukaduwadutuzubiwa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7254/files/praise_and_worship_songs_list_and_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/duvelawelow.pdf
    • https://cdn.shopify.com/s/files/1/0434/1324/2005/files/89102944982.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/mowejikove.pdf
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/14127651685.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/97915532842.pdf
    • https://cdn.shopify.com/s/files/1/0432/8446/3784/files/39088215025.pdf
    • https://cdn.shopify.com/s/files/1/0430/5649/6794/files/30735944702.pdf
    • https://cdn.shopify.com/s/files/1/0437/1152/9114/files/59911831707.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/runescape_dungeoneering_sagas_guide.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_off00006643.bin
c4b978540051de159b05dbf17766fb9c599f558726d137be3aae7809609cb93b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6643 5356 bytes
font_01_sfnt_off00007858.bin
243d9dd6b42b06fbc79ff41dc292a1120fd41d64a471d4e33c47775334ff3c2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7858 15300 bytes

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