Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f94d9dc2ddb9e54…

MALICIOUS

PDF

47.1 KB Created: 2020-08-05 14:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f754cc9d42d452c90da80bfd80137c24 SHA-1: f69ca6ff4ffeaca6f3ee385bde610d25f2df446f SHA-256: 4f94d9dc2ddb9e542d589accf07acaf24ec39472449836c52ee69be4a51bdda7
152 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and heuristics indicating malicious redirector links and a link farm. The document body contains a URL that points to a redirector, which is likely intended to lure users to malicious content. The presence of numerous external links, many pointing to Shopify domains with numeric or book-related slugs, suggests an attempt to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=bikini+body+guide+training+pdf
    • http://files.creamcityconstruction.com/uploads/1/3/0/7/130739174/zejasoroxalebub-tijatidasaxu.pdf
    • http://moleseb.shaunpeknic.com/uploads/1/3/0/8/130873951/vokamupitadiju-kuwowejef.pdf
    • http://files.bswiatkiwskybowen.com/uploads/1/3/1/3/131380616/1603396.pdf
    • http://files.bewell-net.com/uploads/1/3/1/3/131398143/f72113ac4fd8.pdf
    • https://cdn.shopify.com/s/files/1/0429/6635/2028/files/54770721214.pdf
    • https://cdn.shopify.com/s/files/1/0428/4986/1791/files/sokobodudena.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3232/files/how_can_i_reorder_pages_in_a_file.pdf
    • https://cdn.shopify.com/s/files/1/0440/5959/0806/files/alison_diploma_certificate.pdf
    • https://cdn.shopify.com/s/files/1/0432/4520/7714/files/rivefajotajeduzumilunol.pdf
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/lupukifusijisexomibatokij.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/jupikotemezo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8638/8136/files/vejezuron.pdf
    • https://cdn.shopify.com/s/files/1/0435/4536/2591/files/61723636654.pdf
    • https://cdn.shopify.com/s/files/1/0431/3740/0999/files/violin_bow_making_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/2817/5265/files/76870695537.pdf
    • https://cdn.shopify.com/s/files/1/0434/1268/4967/files/graph_paper_background.pdf
    • https://cdn.shopify.com/s/files/1/0437/0874/3834/files/minecraft_mods_1._8._3.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_off00006378.bin
495f3c495e95b2a9306b6f30785d8eb6bd098fc39796d9ae5aa3852e4aa03339		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6378 5352 bytes
font_01_sfnt_off000075cd.bin
da17091811c6af8f72de09618c72b0135c248437cf8c3c28e7b52ac5e8b01cd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75CD 10412 bytes
font_02_sfnt_off0000998f.bin
844cb084336e143bceaacd7de948136837ca80d958068760f33a7e0e858d23f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x998F 16320 bytes

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