Malicious PDF — malware analysis report

Static analysis result for SHA-256 86c9dbd6454aeff0…

MALICIOUS

PDF

59.2 KB Created: 2020-08-11 21:47:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dcc63fb3ca70f0995380a7f1da025ab SHA-1: 9d14ceef6a6116251b26b301461aef16aab5eb35 SHA-256: 86c9dbd6454aeff0a3a17388ac4d121a6678fba15c7fd2d933311a67d54eb949
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are SEO-optimized and point to benign Shopify domains, but one critical link redirects to known malicious infrastructure at ttraff.com. The document body, though heavily obfuscated, contains the same lure text and the malicious URL, suggesting the intent is to trick the user into clicking the link for a fake syllabus download. No scripts were extracted, but the PDF's structure and link farm indicate a delivery mechanism for further malicious content.

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.com/wb?keyword=lab%20assistant%20exam%20syllabus%202018%20pdf%20download
    • http://files.lauraguayartclass.com/uploads/1/3/0/8/130814432/6abac0.pdf
    • http://files.majorlaserremoval.com/uploads/1/3/1/8/131871912/1663834.pdf
    • http://files.benjaminhoffman.org/uploads/1/3/0/8/130874490/8eb018415f79aa.pdf
    • http://files.briancatucciomusic.com/uploads/1/3/0/8/130873997/sefal-bided-tifekup.pdf
    • http://files.troop53methuen.com/uploads/1/3/0/7/130775543/rujonedefa.pdf
    • https://cdn.shopify.com/s/files/1/0432/9144/3364/files/41510564018.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/31781244592.pdf
    • https://cdn.shopify.com/s/files/1/0430/8667/6117/files/79756364341.pdf
    • https://cdn.shopify.com/s/files/1/0436/8374/1849/files/82982906668.pdf
    • https://cdn.shopify.com/s/files/1/0434/6953/7432/files/11984930566.pdf
    • https://cdn.shopify.com/s/files/1/0436/3039/5552/files/biwamigax.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65022979336.pdf
    • https://cdn.shopify.com/s/files/1/0434/1248/8348/files/how_to_cite_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/4620/7650/files/94720033018.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3681/files/long_bodmas_questions.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/73450910553.pdf
    • https://cdn.shopify.com/s/files/1/0436/9576/7706/files/employee_background_check_form.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e87.bin
979024a5cfb5415bcbc8ea9366b2e23ef2de00b7d649dd4e56aaa2920412e07b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E87 5836 bytes
font_01_sfnt_off00008267.bin
960920ad08be10bf8ad878a43ce0481a0f590a23c48b6fefb8e2b50fc1978cd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8267 14136 bytes
font_02_sfnt_off0000aeee.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEEE 4324 bytes
font_03_sfnt_off0000bcf0.bin
8b1a8d540b6c474e7a98ada07acf320fdc943e56dd89ee66c75084008a16cebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCF0 11164 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.