Malicious PDF — malware analysis report

Static analysis result for SHA-256 070d5bfe4c1e17d1…

MALICIOUS

PDF

124.3 KB Created: 2021-03-24 04:51:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f0fd57ec5d37ecbfaedfa5018a089bb6 SHA-1: cca80d0a66ba446ce94c857783c8fad3787d19b2 SHA-256: 070d5bfe4c1e17d1b85bddd95f1e8f7ad71464013d5c02d9391b9d8253f5e6d5
66 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a likely attempt to redirect users to malicious sites. The ML classifier strongly flagged this PDF as malicious, and the heuristic for a link farm on disposable hosting further supports this. While no scripts were extracted, the structure and embedded URLs suggest a phishing or malware distribution lure.

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://resalured.ru/wix?keyword=wand+flexibility+meaning PDF link annotation
    • http://bbcua.site/chitralahari_audio_songs_comejvu0a.pdfIn PDF document text
    • http://thechambre.xyz/pamaj82fjz.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/rUlnLji/44903693530.pdfIn PDF document text
    • https://kedadatiwuji.weebly.com/uploads/1/3/4/8/134891749/jesokogututan.pdfIn PDF document text
    • https://cdn.sqhk.co/podidiwi/jdVidjf/jerakeweruniwojakufupe.pdfIn PDF document text
    • http://tertov.xyz/how_to_gain_weight_on_paleo_diet6r1it.pdfIn PDF document text
    • http://intekzafast.online/cccam_app_apkwgayt.pdfIn PDF document text
    • https://cdn.sqhk.co/moturalogupe/j3ghIie/car_rush_racing_game_free_download_for_pc.pdfIn PDF document text
    • http://khanapoorti.com/video_calling_applicationjgqte.pdfIn PDF document text
    • http://tryporte.xyz/windwalker_monk_guide_wowheada5s2h.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/857f22aac.pdfIn PDF document text
    • http://gunurovidoz.iblogger.org/rufatuxojojemovezoj.pdfIn PDF document text
    • http://vir-tus.com/detroit_red_wings_charter_planeu2mxf.pdfIn PDF document text
    • https://cdn.sqhk.co/zidodovare/gg9ojcB/detox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuguropusib.epizy.com/love_story_telugu_movie_2020_release_date.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/senugumatijajit.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/fleck_5600_econominder_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/my_scooter_wont_start_when_its_cold.pdfIn PDF document text
    • http://magobugibex.epizy.com/agriculture_in_tamil_language.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19572 5276 bytes
SHA-256: 0424f3db3da4d6bc625b6176c0ca8a5eff319a5d58ff3287f2c33cdb8ce1e1f9
font_01_sfnt_off0001a775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A775 11296 bytes
SHA-256: b53a5c1798510f96734d3df5af74772ebe19a13fe20c5322f048de586b024d40
font_02_sfnt_off0001ce25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CE25 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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