Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee80a521a69defa…

MALICIOUS

PDF

69.3 KB Created: 2021-01-24 01:39:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 7fd399512077b59e3229e7ce2ca92797 SHA-1: 99856469f95228e5d8aad38d3f54931e5d860fe3 SHA-256: 6ee80a521a69defaa93bb63b29cd1143d30a5ec9c0c588963f779925a7cf0002
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. It contains a large number of embedded URLs pointing to disposable or low-reputation domains, suggesting a phishing or scam campaign. The document body, though heavily obfuscated, contains keywords related to search terms, further supporting the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffi.ru/aws?utm_term=brothers+movie+telugu+ringtones+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375884/normal_6001136a6aec3.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/b4jfRja/69834257593.pdfIn PDF document text
    • https://site-1177315.mozfiles.com/files/1177315/aver_vc520.pdfIn PDF document text
    • https://gilepijojuju.weebly.com/uploads/1/3/2/7/132740412/5819875.pdfIn PDF document text
    • https://cdn.sqhk.co/rukokota/iirifPg/las_vegas_challenge_2019_disc_golf.pdfIn PDF document text
    • https://falufanimuv.weebly.com/uploads/1/3/4/3/134377488/2501429.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416132/normal_5ff5f2f49c9b4.pdfIn PDF document text
    • http://puwexakibo.iblogger.org/funovukulona.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/EkmB2jf/air_attack_mod_apk_revdl.pdfIn PDF document text
    • https://bokakarepexopo.weebly.com/uploads/1/3/4/7/134750167/pufeledetunali.pdfIn PDF document text
    • https://gavedomosuzutu.weebly.com/uploads/1/3/4/2/134234743/87b6332fdf4afc.pdfIn PDF document text
    • https://cdn.sqhk.co/pojuwudedi/ijmhcrr/samsung_my_files_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371269/normal_5ff75a6609f91.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://notewewagegev.rf.gd/2375241895.pdfIn PDF document text
    • http://taruxapajosavup.epizy.com/dotavapi.pdfIn PDF document text
    • http://zijomofi.epizy.com/37181586145.pdfIn PDF document text
    • http://gujusama.rf.gd/lanikuvipopavew.pdfIn PDF document text
    • http://japorivexasore.epizy.com/magic_flute_song.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC348 6744 bytes
SHA-256: 0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63
font_01_sfnt_off0000d42f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD42F 5080 bytes
SHA-256: 6c97783742402d82b80e42ad85f7c55080503e62d0c9b37058773f0a803ecb3a
font_02_sfnt_off0000e55f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE55F 10036 bytes
SHA-256: 8d46d168969c6a0ed649a6f058b0a0af1f6d2125138f9d369221898b0d2e23f0

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