Malicious PDF — malware analysis report

Static analysis result for SHA-256 94873c4a8ca94534…

MALICIOUS

PDF

47.5 KB Created: 2020-08-26 16:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7961f0d78733a2854e325f345ec97a4a SHA-1: e5982495f554b2d750d4a417c30ee76930850eac SHA-256: 94873c4a8ca94534b08afb806b32dfdc181ab7407a516c6815de6b83163ff400
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic, suggesting it's part of a link farm. The embedded URL in the document body, 'https://ttraff.com/pify?keyword=nota+de+venta+formato+excel', is the primary indicator of malicious intent, likely serving as a lure for further malicious activity.

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=nota+de+venta+formato+excel
    • http://files.buttecollegebcea.org/uploads/1/3/1/4/131453998/2695778.pdf
    • http://dukipowen.peacejams.com/uploads/1/3/0/8/130814328/dalufulivase-dilezil-ximomitonule-kesufifafokewuf.pdf
    • http://winunifi.jlinco.com/uploads/1/3/1/4/131453526/bugawinetevuxe.pdf
    • http://somet.utahyouthcourts.com/uploads/1/3/2/3/132303354/jurimagilivom.pdf
    • http://files.kmbuildersltd.com/uploads/1/3/1/0/131070561/379183.pdf
    • https://cdn.shopify.com/s/files/1/0432/9042/7552/files/nupapovud.pdf
    • https://cdn.shopify.com/s/files/1/0427/7331/5740/files/mastering_chemistry_chapter_10_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0429/8217/8979/files/google_featured_photos_locations.pdf
    • https://cdn.shopify.com/s/files/1/0434/7812/2649/files/converting_currency_in_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/0985/1048/files/16597465400.pdf
    • https://cdn.shopify.com/s/files/1/0457/4612/7004/files/mcdonalds_happy_meal_food_transformers.pdf
    • https://cdn.shopify.com/s/files/1/0430/7537/1159/files/pebem.pdf
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/28116790292.pdf
    • https://cdn.shopify.com/s/files/1/0447/1685/1356/files/android_studio_r_not_defined.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/
    • https://cdn.shopify.com/s/files/1/0432/9042/7552/files/nupapovu

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a85.bin
4f9fcb139ca77b1ddaf283696767e8e817b27415e8e6bd0d760aaf5afc71a1e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A85 4828 bytes
font_01_sfnt_off00007adc.bin
d649c57db05e60657d76a58904e04f73a7977f568ea1173d2f5f0db1c8d948c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADC 11876 bytes
font_02_sfnt_off0000a16b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA16B 4324 bytes