Malicious PDF — malware analysis report

Static analysis result for SHA-256 52d484ae12dc7355…

MALICIOUS

PDF

42.6 KB Created: 2020-10-31 04:17:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7a58049b5c56383185f25bd2417fae0 SHA-1: 1df1192987be73f2f54e60774ec194fb01de4dc6 SHA-256: 52d484ae12dc7355705a4dd65a2f14a70d06c86c1334645304c43f83a58d997c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a title or description, suggesting a lure. The presence of many external PDF links, some pointing to benign content and others to unknown domains, indicates a potential link farm or SEO manipulation tactic. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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://ggtraff.ru/123?keyword=visys+rca+phone+manual
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/volefesa.pdf
    • https://warakamaluxib.weebly.com/uploads/1/3/4/3/134378328/dovidiruwepe_jupivubukib_sawivi_babenuxo.pdf
    • https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/7998241.pdf
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/zakeme.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0498/4042/3091/files/foparovotesewoweso.pdf
    • https://s3.amazonaws.com/nisoxow/princess_diaries_book_5.pdf
    • https://s3.amazonaws.com/henghuili-files/guia_aceites_esenciales.pdf
    • https://cdn.shopify.com/s/files/1/0439/3009/1688/files/ratepixapakedanozigedaj.pdf
    • https://s3.amazonaws.com/napoledunadigo/sojapuzulajawiwafozufut.pdf
    • https://s3.amazonaws.com/muvarelo/cuneiform_ancient_scripts.pdf
    • https://uploads.strikinglycdn.com/files/2efa8fe3-0aa2-4ee1-8a52-ec700c5c3511/original_singer_of_hallelujah.pdf
    • https://s3.amazonaws.com/jufowokedunod/17854196077.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fcb.bin
5a3691e3a5f7a050455f3fae8783378af5a5a732dfc37d3794de6b1ceab9949b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FCB 5240 bytes
font_01_sfnt_off0000617d.bin
f9f4d66aa277edd606cac25b3b491d1ceeeac4d80dbf3f228240905e6bb31aaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x617D 10368 bytes
font_02_sfnt_off0000850a.bin
02371a62fee874ce826f15f907c4c9fb24920ea4617c90e94b97597b3a3148df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x850A 17044 bytes

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