Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd1e1e1dfe05f6ea…

MALICIOUS

PDF

41.9 KB Created: 2020-08-30 03:55:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5f066f3df9372fef54d42b8d158f441 SHA-1: f5fd8963fded5240ce76d11111b5962811c97a80 SHA-256: bd1e1e1dfe05f6eaecbdc54068eec312959fef3944ce77d653c077eabb93592b
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=coin+red+book+values'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the first identified as 'https://cdn.shopify.com/s/files/1/0435/3087/9136/files/bollywood_emotional_songs_free.pdf'. The document body, though partially corrupted, contains text related to 'coin red book values' and the malicious URL, suggesting a lure to a scam or phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=coin+red+book+values
    • https://cdn.shopify.com/s/files/1/0435/3087/9136/files/bollywood_emotional_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/8055/5419/files/85807153227.pdf
    • https://cdn.shopify.com/s/files/1/0461/6408/2851/files/layout_animation_android_react_native.pdf
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/46437017182.pdf
    • https://cdn.shopify.com/s/files/1/0431/8425/9231/files/animal_farm_by_george_orwell_summary.pdf
    • https://cdn.shopify.com/s/files/1/0435/6423/6968/files/hanuman_chalisa_english_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0435/2072/1055/files/39838409247.pdf
    • https://cdn.shopify.com/s/files/1/0453/8466/3208/files/i_swear_song_mr_jatt.pdf
    • https://cdn.shopify.com/s/files/1/0433/0569/7438/files/92062495518.pdf
    • https://cdn.shopify.com/s/files/1/0457/3416/6694/files/domemuluwafinagiko.pdf
    • https://static.usrfiles.com/ugd/5438e3_8a11d2306d254e44aeb676f902201185.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_bd488dcc25ea4043bd264a29502622b7.pdf
    • https://static.usrfiles.com/ugd/5af86b_0e497f4c48ed44f6b2af5af75cf3d3a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_c7d33ede001a4b4d9225f5edc0145288.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_off000067b1.bin
668a598f09ec6607d87f9c2188fd51951cc39d9109f65a1eff2b39e06338ccc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67B1 4988 bytes
font_01_sfnt_off000078b0.bin
1d5d629bbfb539e1948a548bbf4a4e471a37bdc33179ff971646a6286b8f8e57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B0 10132 bytes

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