Malicious PDF — malware analysis report

Static analysis result for SHA-256 a66e8e9558e5d3f6…

MALICIOUS

PDF

42.7 KB Created: 2020-08-08 09:07:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 879c010221708a66b707013a907592b3 SHA-1: 6346698bb1da60439e98e4ad23c83767875600bc SHA-256: a66e8e9558e5d3f6438fbd8e5c91e5709ad953830f43cb590497f0a7e2d488ce
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=multiple+alleles+notes+pdf'. Another critical heuristic indicates a link farm structure, suggesting the document's primary purpose is to distribute traffic to external sites. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or malware delivery attempt.

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=multiple+alleles+notes+pdf
    • http://files.teamlowa.com/uploads/1/3/1/6/131607712/gupozinaxofopekuva.pdf
    • http://denefikid.peggymdavis.com/uploads/1/3/1/3/131380107/mimeraro.pdf
    • http://files.wisedemocracy.org/uploads/1/3/2/6/132695280/jijali.pdf
    • https://cdn.shopify.com/s/files/1/0434/6095/2229/files/6106806597.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3089/files/gupoxusufuximawale.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/wavirilixit.pdf
    • https://cdn.shopify.com/s/files/1/0434/8670/7876/files/teenage_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/77394100397.pdf
    • https://cdn.shopify.com/s/files/1/0430/8212/1377/files/19007462397.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/savowogofoxifonikili.pdf
    • https://cdn.shopify.com/s/files/1/0438/6127/8870/files/57349303234.pdf
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/mokemelinipikidalimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8386/6007/files/vogigokawojupokanas.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/bikini_body_guide_1._0.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_off00006add.bin
a0ae72793033774acf309f819fdf4e9ef5b260a463b9365d76c8fdc11c437499		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADD 4944 bytes
font_01_sfnt_off00007bd1.bin
d4c990f2d653b15c225df3d59fbe79b73a29e3d855b2e2635a76d69179b96e7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD1 10044 bytes

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