Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba60b5e77f6dc6f…

MALICIOUS

PDF

33.3 KB Created: 2020-08-21 06:12:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f4887e687040e5b5ac80de198462b52 SHA-1: bf2fa2ced9bc8506bd5fc96b669d2b11b5b6047b SHA-256: 9ba60b5e77f6dc6fe7486fdeb19823fc8952516e2eb5419c38ee81551eca4df1
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, including one pointing to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the text 'Picsart background 4k photos' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine ranking for malicious content.

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=picsart+background+4k+photos
    • http://files.nomorejoemoore.com/uploads/1/3/1/4/131437750/576761.pdf
    • http://garonoma.nicolelovetoshare.com/uploads/1/3/0/9/130969754/rutewonogafor-rulawadu-kunoge-minegoz.pdf
    • http://files.dawnlandscape.com/uploads/1/3/0/7/130775245/942689.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/aircrack-_ng_mac_os.pdf
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/7018536564.pdf
    • https://cdn.shopify.com/s/files/1/0439/8209/4494/files/besharam_song_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0437/1572/3414/files/42528026714.pdf
    • https://cdn.shopify.com/s/files/1/0434/0449/2957/files/arithmetic_by_rakesh_yadav.pdf
    • https://cdn.shopify.com/s/files/1/0438/2448/0416/files/kemopaponajugu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2141/8147/files/56420453286.pdf
    • https://cdn.shopify.com/s/files/1/0434/4138/9720/files/6th_grade_social_studies_test.pdf
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/mov_to._avi_converters.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/40913497022.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/35948131218.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_off00004542.bin
d6df31be76865472aa60d9d434354fb7465a450842ea5a49565974d1617c33f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4542 5596 bytes
font_01_sfnt_off00005839.bin
c4ada41501e27c963d0e21f405fbde1fb10a637658c66eff692022e98432ea58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5839 9548 bytes

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