Malicious PDF — malware analysis report

Static analysis result for SHA-256 8963a8a6f64cb5bd…

MALICIOUS

PDF

51.9 KB Created: 2020-08-23 23:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89b5e7a4235dd6180a047123333d2844 SHA-1: fa086edd27f05ba8a5674adae25eccea05798f6a SHA-256: 8963a8a6f64cb5bd752eb18b96100fa1faf34e8f92199a063d79eec43ea320db
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many hosted on Shopify, designed to appear as legitimate course information. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary payload delivery mechanism. The document body contains garbled text but includes the suspicious URL, further indicating its malicious intent.

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=pgcil+course+full+form
    • http://files.buyportlandstores.com/uploads/1/3/2/8/132816041/5561151.pdf
    • http://files.livinglifeyellow.com/uploads/1/3/0/7/130739802/929172.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lonub.pdf
    • https://cdn.shopify.com/s/files/1/0431/4093/9933/files/64372443416.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wopesutokuvikoku.pdf
    • https://cdn.shopify.com/s/files/1/0434/9453/9429/files/47759250244.pdf
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/bloodsport_theme_song_ringtone_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/1349/6222/files/ronubovulutam.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/28690179497.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/2942053594.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/leave_and_earnings_statement.pdf
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/36800081046.pdf
    • https://cdn.shopify.com/s/files/1/0463/0603/3824/files/legurikebawulus.pdf
    • https://cdn.shopify.com/s/files/1/0431/0273/2448/files/british_english_grammar.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008323.bin
32fc349ecbc8c5e747106cd3a32790295f616060ab25e74966ed1e23c64e4eb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8323 4992 bytes
font_01_sfnt_off00009407.bin
c074a075146a7c0d2a71afbbf841557bc959ba71a85b00fa85745719bd4d36f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9407 10324 bytes
font_02_sfnt_off0000b76f.bin
a12908a88df35a7e9eb57470e9a94a806bb52df392ce88a62d07cba2b79b9044		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB76F 2832 bytes

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