Malicious PDF — malware analysis report

Static analysis result for SHA-256 f987598b9794f430…

MALICIOUS

PDF

77.7 KB Created: 2021-04-04 04:55:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f6049dc8920ff77fd1f61c6b8aa7653 SHA-1: 4ab9e69b1d5d5f585f60af27bd79fa496b09d9e1 SHA-256: f987598b9794f430efd81d895cc374f6460576817cdfa3027e1037c0b48ccb54
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO poisoning and directing users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, with one pointing to 'https://nipisod.ru/wix?keyword=raze+2+hacked+unblocked+weebly', suggesting a lure related to online games. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/wix?keyword=raze+2+hacked+unblocked+weebly
    • http://vkysnaya-eda.site/dirozemanikijirigodyv6xl.pdf
    • https://lofusomibebez.weebly.com/uploads/1/3/2/7/132740423/wesuzotasewizip.pdf
    • https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/8c9eb9c368.pdf
    • https://jipofaxinevafud.weebly.com/uploads/1/3/4/3/134350183/7d3716.pdf
    • http://missunik.space/58658315661654ho.pdf
    • https://zadobezaja.weebly.com/uploads/1/3/0/7/130775221/9688403.pdf
    • http://yesitalia.fun/76341696082wa2mx.pdf
    • http://devlp.design/gangs_of_london_season_2_episode_19wrik.pdf
    • http://vakexuk.22web.org/bujunobiletetalomelidaj.pdf
    • http://ing-cliente.com/disney_cello_sheet_musictxz4v.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fupanabivote/rejizevagiso.pdf
    • https://0c7ecde5-8d52-4b6d-bf00-bcb9beb5fd3c.filesusr.com/ugd/b6f5a5_26deb07c990041b0a9c63a5749650151.pdf?index=true
    • https://7d6e376e-1ee3-4df5-88c1-8d1511d419f8.filesusr.com/ugd/7dd30d_1d59cedb85d84c2f9d7c6f27246eddcf.pdf?index=true
    • https://80820154-e864-4b0c-832b-212b24169927.filesusr.com/ugd/c12414_b37ac3dfefad42cdb10f7cac19c9b200.pdf?index=true
    • https://s3.amazonaws.com/lekezaru/enigmatic_fortress_guide_2._2.pdf
    • https://d6aab468-caab-4d9e-910f-d3bf64ae4104.filesusr.com/ugd/5438e3_b3314e93dbc340c49fa26e3f35db11b9.pdf?index=true
    • https://90ff81fc-98d9-4e53-96a3-aaa5c1c2042e.filesusr.com/ugd/bb5aff_cfa8f1b9f0c940b1a5bca3c8bd1e826a.pdf?index=true
    • https://s3.amazonaws.com/zusevamasor/can_you_track_regular_envelope.pdf
    • https://6674166f-eb58-46b1-9d38-a528bc95e02c.filesusr.com/ugd/e38d8e_6422514a1a4e4cf0bf26784592e18bf0.pdf?index=true
    • http://tejojode.rf.gd/carper_s_understanding_the_law_7th_edition.pdf
    • http://denaruzunus.epizy.com/american_english_study_dictionary.pdf
    • https://b6de9e3f-c562-4e05-b5ee-70895c8060ae.filesusr.com/ugd/3801ff_202c4d691c444c8693fe417555eef660.pdf?index=true
    • http://jalafugidovi.epizy.com/how_to_write_a_descriptive_essay_example.pdf
    • https://4a5bfc55-71df-4474-8f3e-9f6aca65c64b.filesusr.com/ugd/29b6ce_b357dea20199420fac2f605369e32221.pdf?index=true
    • http://gimukukuzape.epizy.com/40870090822.pdf
    • https://1cdd1dcb-54a5-4750-95ad-c4cce9a68cd1.filesusr.com/ugd/1e32c2_74cbf90a5399425182884365295b20f5.pdf?index=true
    • 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0e3.bin
02901e5b111ddc76ec884d46806138da624d46980db34e7a585cfced15a6ae51		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E3 5340 bytes
font_01_sfnt_off00010331.bin
5a760e552de039c76d7675a1898bc116c4f725a2ed9d0cdf79d21b0f5435fc54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10331 10732 bytes

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