Malicious PDF — malware analysis report

Static analysis result for SHA-256 fec1215baff3ddfc…

MALICIOUS

PDF

74.9 KB Created: 2021-02-11 07:46:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 392253bd03354d703fd8be98411c7405 SHA-1: c3cd114f669381b29d089b89099c177af7398033 SHA-256: fec1215baff3ddfc2cc2e65d774da8977e93a71a0184f3e229a6856ab333e4e2
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with several pointing to suspicious or unknown domains, suggesting an attempt to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to a 'Lexique informatique anglais', likely to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/aws?utm_term=lexique+informatique+anglais PDF link annotation
    • http://bcpzonasegurape2-viabcp.com/pikapabefemexub24vu.pdfIn PDF document text
    • https://ziwagunu.weebly.com/uploads/1/3/4/8/134883986/36e60.pdfIn PDF document text
    • https://degugelusejife.weebly.com/uploads/1/3/2/6/132695568/5594945.pdfIn PDF document text
    • http://helplnstagramcontact6088757.com/lord_of_the_rings_return_of_the_king_pc_downloadgqs70.pdfIn PDF document text
    • https://cdn.sqhk.co/jibenapola/lmIhbgg/2019_swipe_brick_breaker_legends.pdfIn PDF document text
    • http://mx50off.info/acronis_disk_director_12._5_isohug5d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476601/normal_60052f579ac44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407729/normal_5fcace3f0a646.pdfIn PDF document text
    • https://cdn.sqhk.co/remowiwa/9migjgG/alley_electronique_ball_blaster_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460460/normal_5fdf59c562207.pdfIn PDF document text
    • https://kuxiwidozerapi.weebly.com/uploads/1/3/4/7/134728536/a17c8d7de2e3fe.pdfIn PDF document text
    • https://talovilivakalod.weebly.com/uploads/1/3/5/3/135326419/rogobo.pdfIn PDF document text
    • https://cdn.sqhk.co/xobupiba/jbhfii0/sneakers_inc_mask.pdfIn PDF document text
    • https://jitipukojid.weebly.com/uploads/1/3/4/7/134707402/d87938ab47.pdfIn PDF document text
    • http://optamorem.com/best_ladder_jokesrny9y.pdfIn PDF document text
    • https://cdn.sqhk.co/sesexibanobu/hedvigd/55141396479.pdfIn PDF document text
    • https://buzikapafopix.weebly.com/uploads/1/3/4/3/134375334/189040.pdfIn PDF document text
    • https://boleturem.weebly.com/uploads/1/3/4/3/134398498/156d24a8f0f0c3c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/firework_piano_sheet_music_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/watch_dogs_2_walkthrough_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/aisi_taisi_democracy_full_show.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6BB 5220 bytes
SHA-256: 524a056a5543627acf618d1faa3be58edd4d5d50c23285732982df3d59894fba
font_01_sfnt_off0000f875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF875 11636 bytes
SHA-256: de19c26eb78126b257959be51b00814c77fddd784748a5411ed539caad4e92c6

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