Malicious PDF — malware analysis report

Static analysis result for SHA-256 6faf173e6ec5a4d9…

MALICIOUS

PDF

98.0 KB Created: 2021-03-22 08:41:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ed837fc58a0939ff6ada0a19da0e7b97 SHA-1: 5297eb41484533e64e5f2eda9a2704d899e612a1 SHA-256: 6faf173e6ec5a4d9f64b12d0fc54ab82e6a94664357512737ba939f8e936d22d
134 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ponafet.ru/wix?keyword=translation+and+transcription+worksheet+answers PDF link annotation
    • https://sodukosikel.weebly.com/uploads/1/3/4/5/134598711/8105752.pdfIn PDF document text
    • http://prizinsta24.online/duregobarenawotikvb2la.pdfIn PDF document text
    • https://kigodebilak.weebly.com/uploads/1/3/5/2/135297846/vajigim.pdfIn PDF document text
    • http://good-production16.site/nopetopatizeparasojemelen3tonj.pdfIn PDF document text
    • http://oficialshoes.site/tozisibixuviwdankm.pdfIn PDF document text
    • http://psychologyrelax.xyz/introduction_to_data_science_machine_learning__ai_using_r3fvji.pdfIn PDF document text
    • https://cdn.sqhk.co/fulaxanew/MjicifX/spacex_capsule_landing_video.pdfIn PDF document text
    • http://gufutaca6.xyz/makinivuragadaxulx5sn.pdfIn PDF document text
    • https://sezokifor.weebly.com/uploads/1/3/4/5/134596047/2330229.pdfIn PDF document text
    • http://mazers.fun/percy_jackson_sea_of_monsters_book_ar_test_answersd5dr7.pdfIn PDF document text
    • http://tpdreport.com/what_is_the_best_sewing_machine_to_buy_in_australia2yuv2.pdfIn PDF document text
    • http://govnosiakxws.online/zagawonenifa2y6wb.pdfIn PDF document text
    • http://ig-about.net/majinalunalotexblxnz.pdfIn PDF document text
    • https://cdn.sqhk.co/gevagedubop/hsSjh9M/11705699135.pdfIn PDF document text
    • http://genusadnlo.space/75857120378ta4jf.pdfIn PDF document text
    • http://bestrongbyg.com/606057376601587f.pdfIn PDF document text
    • https://zademufexek.weebly.com/uploads/1/3/4/7/134765537/medinazagit-jufexu.pdfIn PDF document text
    • https://cdn.sqhk.co/xaduwudixum/h6uTWfV/mupokavipez.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/LhjrMJr/you_me_at_hello_crossword_clue.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B74 2828 bytes
SHA-256: dd7b880f1c6958317b71933e3175eb4154b1281d355b69180e4ce829e506ee21
font_01_sfnt_off0001356e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1356E 5056 bytes
SHA-256: 6b1d8a001eac5352a6c8dbc40a707be9a10b4271fdef1f38df5569848c74f545
font_02_sfnt_off0001469c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1469C 10412 bytes
SHA-256: d4efd72b86a6eb8d0d584f1c11e9d317b667bf884e1815c99c481c958fb2ffc1
font_03_sfnt_off000169f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169F3 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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