Malicious PDF — malware analysis report

Static analysis result for SHA-256 191e77d944ad5627…

MALICIOUS

PDF

44.6 KB Created: 2020-08-22 07:30:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 941b2a005796314c55fe71655263001d SHA-1: 72043d8261baba1e25046dd4a435b904233c065d SHA-256: 191e77d944ad56278153ea068317b0eca2c532a0d3bb8259c46f38db66c910d6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to 'isotopes and mass spectrometry practice answers'. The presence of numerous external links, many pointing to Shopify domains, indicates a link farm strategy to obscure the malicious redirector. The primary malicious IOC is the ttraff.cc redirector URL, which is likely used to funnel victims to further 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.cc/pify?keyword=isotopes+and+mass+spectrometry+practice+answers
    • http://files.capecodpride.org/uploads/1/3/1/8/131858540/vomer.pdf
    • http://files.droptestmedia.com/uploads/1/3/1/6/131636655/gegujulipuba-gavavewejugi-fadoxisazu-vubosirulaw.pdf
    • http://files.ukmencar4.org/uploads/1/3/1/4/131409526/5031923.pdf
    • https://cdn.shopify.com/s/files/1/0431/1813/3405/files/pibokenexomevudo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3203/4976/files/29116729578.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9165/files/tmux_move_pane.pdf
    • https://cdn.shopify.com/s/files/1/0427/9966/1223/files/5e_mariner_fighting_style.pdf
    • https://cdn.shopify.com/s/files/1/0437/9197/4549/files/how_to_activate_nightbot_on_twitch.pdf
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/2240362757.pdf
    • https://cdn.shopify.com/s/files/1/0434/5787/2039/files/twi_cswip_3._2_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/3730/2679/files/wavibuxejepupejatabofarok.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/87174458605.pdf
    • https://cdn.shopify.com/s/files/1/0434/5384/1560/files/64666950916.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/85698582506.pdf
    • https://cdn.shopify.com/s/files/1/0435/4995/0116/files/83866638231.pdf
    • https://cdn.shopify.com/s/files/1/0432/9927/4916/files/amicon_ultra-_15_centrifugal_filter_units_manual.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_off00006fd7.bin
b179b26e355b8e081cf91253b90d207b9ee9d106afaf38ff1e05df34097c494a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD7 5316 bytes
font_01_sfnt_off000081e1.bin
e3f97bde1d9790e6b0769d53bd4dd2d58b119daf09ecc512df24115115791c69
pdf-font-stream PDF embedded font (sfnt) at offset 0x81E1 10248 bytes