Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5f7d0642cced9c…

MALICIOUS

PDF

86.8 KB Created: 2021-03-17 19:51:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5de94a2b9aa7e290de88953faa7118c4 SHA-1: 7b8b430160e59aca05393b82f441272ec524800e SHA-256: 2d5f7d0642cced9ce303497fae8bb1dd2276f4abff96381242a4f17278f9bbb4
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a 'dwight meme generator' which is likely a lure. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic suggest an attempt to distribute malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/wix?keyword=dwight+meme+generator
    • http://sesalon.xyz/how_to_use_phone_as_remote_for_insignia_tvui30p.pdf
    • https://cdn.sqhk.co/vonewesipan/hjKgiCP/aiou_m._ed_exam_date_sheet_2018.pdf
    • http://virona.org/romeo_juliet_movie_songs_kangal_thirakkum_downloadif40x.pdf
    • http://onlinetyz.xyz/bajirao_mastani_full_movie_720p2d84i.pdf
    • https://cdn.sqhk.co/jowapezo/nMtObFX/fetovefin.pdf
    • https://cdn.sqhk.co/vugujebeku/ghfsD6C/tiny_archers_game_download_for_pc.pdf
    • http://kupiokno.su/tracktion_6_system_requirementsijxbk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • http://www.daltonmaag.com/
    • https://51f47fa2-20f7-4ec4-bb91-8ae4aee689b4.filesusr.com/ugd/917232_e0a49d71b57f47df953bfc0ccd75e310.pdf?index=true
    • https://ea7788ad-ef5a-48b5-911d-3ad522045378.filesusr.com/ugd/f3bfbb_02160f1e3aee4daf92a27b44713c4a8e.pdf?index=true
    • https://6d706a39-1f93-4f1a-9423-caccf7e65e71.filesusr.com/ugd/69f91f_bd185f01e6ad41b58cb3588549d093e5.pdf?index=true
    • https://f405dec1-7f90-4f4c-a861-5286f67d0127.filesusr.com/ugd/ab922d_41a2c505f93749009d12d1b58c3750bf.pdf?index=true
    • https://bf2b7b75-7790-49a7-81e6-d2546e692b42.filesusr.com/ugd/8ccf63_9e7495a3653a407ca08007cb44144791.pdf?index=true
    • http://gigegukamo.epizy.com/sidafosiresab.pdf
    • https://d62ff7d9-aefc-4ab8-8cdf-af38868aea16.filesusr.com/ugd/54b9a1_444532b1f76d49beb3fbe352da56ac61.pdf?index=true
    • http://zumadibud.epizy.com/100_words_with_synonyms_and_antonyms.pdf
    • http://tukuzadixejune.epizy.com/wipugalegetibuwode.pdf
    • https://cccd2283-d272-450a-840b-6541230ebad2.filesusr.com/ugd/5de1df_58a60826623e4d41bd95cc48cbbb1f5a.pdf?index=true
    • https://e5b7f393-9b83-42c5-a877-5b85c0c772c8.filesusr.com/ugd/77b42d_f99f32169fbf414b9693a285a88729f5.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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f033.bin
a2e84936cb46135178547842f5faf158d3720836d08306cd24a18df4bab02051		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF033 4768 bytes
font_01_sfnt_off0001003d.bin
af1b71178367c18f120c42053d6a4f2de711adf3d2c205202df55d51c08367d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1003D 9452 bytes
font_02_sfnt_off00011ab4.bin
387e7346aaab3f558cca054174ab0f344487797f37e6feab170cec0b1bb7204b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB4 10952 bytes
font_03_sfnt_off00014002.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14002 4324 bytes

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