Malicious PDF — malware analysis report

Static analysis result for SHA-256 35d37334ff813214…

MALICIOUS

PDF

82.1 KB Created: 2021-03-12 07:32:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5acb0d7db9fbd21a16fa9acbb1f5cd93 SHA-1: 7f6c3ca4764c37ecd7de3248168c44732034dd09 SHA-256: 35d37334ff813214fa287ac48edc5edb721d9c0d539797560c094bdd350d0e02
156 Risk Score

Malware Insights

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

This PDF file contains numerous external links, a common tactic for phishing and SEO spam. The primary URL, https://nipisod.ru/123?utm_term=windows+media+player++for+windows+8, suggests a lure related to software downloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/123?utm_term=windows+media+player++for+windows+8
    • https://rogapunuki.weebly.com/uploads/1/3/4/3/134375427/9e7c58010eb.pdf
    • https://cdn.sqhk.co/metusoteliza/Frjgi8D/fupatizigoxotajirubibiw.pdf
    • https://cdn.sqhk.co/rodesedaded/iao1giP/star_wars_squadrons_ps4_release_date.pdf
    • https://fugurisugo.weebly.com/uploads/1/3/6/0/136086283/folimite-xiwuwusovuvotar-lugerufulivuvu-fuzej.pdf
    • https://zalevetupuxigex.weebly.com/uploads/1/3/0/7/130739655/luvozaji_zefeviz.pdf
    • https://cdn.sqhk.co/kawiwitifa/Etx9icz/wixebaron.pdf
    • https://cdn.sqhk.co/kinifukix/gIMpEgd/food_nutrition_and_health_degree_jobs.pdf
    • https://titobabedax.weebly.com/uploads/1/3/4/3/134317276/9d7f0.pdf
    • https://karozazosepi.weebly.com/uploads/1/3/4/3/134316788/545672fa8c88c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://xafalelo.rf.gd/logowutusegojat.pdf
    • https://16564176-4c62-44d7-82e3-1dea6b832d73.filesusr.com/ugd/5e57cf_1d246e0b1ec4442696f5d546ec197200.pdf?index=true
    • https://233b4d2f-9c44-4004-b776-098ebc281e6f.filesusr.com/ugd/7f980c_ff67cc8b892d43c9883bce42a2bcefd9.pdf?index=true
    • http://wivoruremuwun.rf.gd/muzasoxitafufukumofi.pdf
    • https://5a1138df-423b-4a5d-a7c7-36223740754e.filesusr.com/ugd/a72fa8_5eceb9e841f24ec7864ff4b3cd9f04ca.pdf?index=true
    • http://wosumobikufiw.rf.gd/visalefojibovexosevojurit.pdf
    • https://1682489e-d94b-4f22-b6a6-c8ecb623ca2e.filesusr.com/ugd/5f226e_914bc9fa810b4f6eada7488a6731b73e.pdf?index=true
    • http://sokevigaku.rf.gd/80081363198.pdf
    • http://gebezixenunil.epizy.com/95380292805.pdf
    • http://gojexevetefe.epizy.com/google_camera_android_version_9.pdf
    • http://zavimefetemif.epizy.com/71583624362.pdf
    • http://midusetoz.epizy.com/13966544495.pdf
    • https://0f926834-650c-4d5a-b53c-ad60ae412ccc.filesusr.com/ugd/6a44d8_db568a7e774245e88b0f0dc8784756aa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f551.bin
2c111332875b82f5775c58aba90c78c7a9ebbb1ab6a96c2cd5b488f1d1e3d21d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF551 5296 bytes
font_01_sfnt_off00010745.bin
00b4811205cc586458aae542cc8aa734dc3ac48c29ed0ec997c67586ffc20b6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10745 11020 bytes
font_02_sfnt_off00012ce3.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CE3 4324 bytes

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