Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d9df195e30fa740…

MALICIOUS

PDF

40.2 KB Created: 2020-08-05 15:14:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58b6f1f27af9b1bd906632c750e22fd1 SHA-1: cdc07d24d140624c9a7d74c3a46544e2bf4532cb SHA-256: 2d9df195e30fa74031228a431a4bee5736409721acc4bd0db1b94eb5a7145c87
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The document body, though partially obfuscated, includes the text 'Comment regrouper plusieurs pdf mac' and the malicious URL 'https://ttraff.cc/pify?keyword=comment+regrouper+plusieurs+pdf+mac', suggesting a lure to a malicious site. The presence of numerous Shopify-hosted PDF links further indicates a SEO-based distribution tactic.

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.cc/pify?keyword=comment+regrouper+plusieurs+pdf+mac
    • http://files.theoriongrouppodcast.com/uploads/1/3/1/4/131408930/zujobarobuvobulo.pdf
    • http://files.cjbands.org/uploads/1/3/1/0/131070561/sutapadefolirajipate.pdf
    • http://files.gvsea.com/uploads/1/3/1/3/131380942/vemotese-lazesun-jidudul.pdf
    • http://files.passion4healing.club/uploads/1/3/1/6/131637649/buparadusokir.pdf
    • https://cdn.shopify.com/s/files/1/0431/0486/2375/files/mesumudonovomugi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3800/6686/files/32860688362.pdf
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/86505052408.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/37147037046.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/kefamojadisakoguxix.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/acoustic_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lonuxifipepi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0319/1193/files/font_awesome_social_icons.pdf
    • https://cdn.shopify.com/s/files/1/0432/9455/6320/files/jexomegalo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/aes_stream_java.pdf
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/read_the_manual_wow.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
stream_003_off00005c62.bin
56e98d8a7bf2cfb19d7f3631b79e100a201eb85d003f83740cbcd699474c5108		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5C62 5380 bytes
font_01_sfnt_off00006e99.bin
6b2d0f9031f9fbf54ea3074c75733dce0f69dd4a9eaea4a103b8d21eff592bc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E99 11236 bytes

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