Malicious PDF — malware analysis report

Static analysis result for SHA-256 be3e1e3bb33e94ae…

MALICIOUS

PDF

46.9 KB Created: 2020-08-05 17:24:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aacc072772e837f9b9d48b1ce3b82e34 SHA-1: f4ab0224ba06558ccf9f3dd58ca2b1db89c8339b SHA-256: be3e1e3bb33e94ae9ea833586f87cd86815fd47f4ac43e16ba1a0f43a26a3227
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One of these links, 'https://ttraff.ru/pify?keyword=alimentos+sin+carbohidratos+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious content. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=alimentos+sin+carbohidratos+pdf
    • http://files.jessicakatzman.com/uploads/1/3/0/8/130814749/e6077.pdf
    • http://files.rasaddleclublarkhill.com/uploads/1/3/0/8/130874360/wugotani.pdf
    • http://files.peopleandpipelines.com/uploads/1/3/1/4/131406506/gedosiwogaxa.pdf
    • http://files.atleet.fitness/uploads/1/3/1/8/131856852/4501845.pdf
    • https://cdn.shopify.com/s/files/1/0449/5595/9464/files/electric_socket_light_switch_heights.pdf
    • https://cdn.shopify.com/s/files/1/0438/1461/7250/files/engineering_mechanics_statics_14th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/que_es_el_sindrome_anemico.pdf
    • https://cdn.shopify.com/s/files/1/0437/6929/9098/files/50213179459.pdf
    • https://cdn.shopify.com/s/files/1/0448/3517/6608/files/brand_equity_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0432/8466/0380/files/doxavimuzoji.pdf
    • https://cdn.shopify.com/s/files/1/0428/8980/5983/files/ropuvowaxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6108/4322/files/66371282785.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/gojorojufufemuvezidugit.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/vogazexena.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/tujojo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/m5r1_rebuild_guide.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_off000078ee.bin
bc4d5a5961f4c96cee3021afeb878ece20cf84a5078b569706cc2cd78f4fd8d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78EE 5524 bytes
font_01_sfnt_off00008b84.bin
0ef147f1b17605db57108c779478f7c6e0fdba0ad209b54f4aa4db60af868cf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B84 10884 bytes

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