Malicious PDF — malware analysis report

Static analysis result for SHA-256 688615944a9dcb29…

MALICIOUS

PDF

73.9 KB Created: 2021-03-02 23:58:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 43478cf7e9efcd817599b4456a071d0d SHA-1: 0c380d52c5be004fe9ba674df749bc12c3fdf727 SHA-256: 688615944a9dcb29ae9f8362c2fb37d46df0208618c1cb8f371bbc37fda292eb
66 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, many pointing to disposable domains and Weebly-hosted files, indicating a link farm designed to redirect users. The ML classifier strongly flagged this PDF as malicious, and the heuristic analysis identified it as a link farm on disposable hosting. The presence of embedded URLs suggests an attempt to direct users to malicious or unwanted content, likely for SEO manipulation or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://mezovuduw.ru/wix?keyword=db+legends+mod+apk+platinmods PDF link annotation
    • https://bemakidej.weebly.com/uploads/1/3/0/7/130739127/xigebigonevo.pdfIn PDF document text
    • http://graatorama.space/83628104030m72uu.pdfIn PDF document text
    • http://pawezujexas.mywebcommunity.org/wazamivavogezijefow.pdfIn PDF document text
    • https://noruwapawufibem.weebly.com/uploads/1/3/0/9/130969999/5356002.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/how_to_use_soap_header_for_authentication_web_service_in_c.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/427984491.pdfIn PDF document text
    • http://musofiron.ru/stand_off_meaning_in_bengalizjkhz.pdfIn PDF document text
    • https://cdn.sqhk.co/savimatuv/eGlhiic/download_free_tv_shows_and_movies_online.pdfIn PDF document text
    • https://fizegebukuri.weebly.com/uploads/1/3/1/4/131453213/nigipopotulev-fapovowerejame-xofeduvonokewej.pdfIn PDF document text
    • http://kuvenumine.mygamesonline.org/can_you_still_buy_wii_u_console.pdfIn PDF document text
    • http://copyright-securityx.com/kevegivixipejirexejeofpzw.pdfIn PDF document text
    • https://cdn.sqhk.co/xovinexesun/j2icihL/bolor.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/aKTzL12/online_3d_shooting_games_counter_strike.pdfIn PDF document text
    • http://jonotijero.medianewsonline.com/suzadokiliriminojinor.pdfIn PDF document text
    • https://cdn.sqhk.co/najafizox/Tjhd0jc/word_blocks_youtube.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pulutugorivexek.atwebpages.com/sports_illustrated_swimsuit_models_kate_upton.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E7 5384 bytes
SHA-256: 0d201d4540012697b52947b09d065d9555f525ee662570fe27a9af346bbf015d
font_01_sfnt_off0000f727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF727 10504 bytes
SHA-256: 64ec08fe813a7bba9130ad74cd31359766192f8e0aeb4c4a2c6210edc7d94fe8

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