Malicious PDF — malware analysis report

Static analysis result for SHA-256 e148b685228a23ea…

MALICIOUS

PDF

76.4 KB Created: 2021-02-16 16:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5942803f5e5c84fb451b305e646ad0ee SHA-1: c7baaf559b79be10197dc7978d8ad0eca8a0c1fe SHA-256: e148b685228a23ead51cfe2d1d5618e727d2f31809594c28e41b1a37c664fca2
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or malware distribution attempt. It contains numerous external URIs and is identified as a link farm hosted on disposable domains, suggesting an effort to redirect users to malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest it's designed to exploit users via malicious redirects.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://druttle.ru/wb?keyword=jawbone%20big%20jambox%20app PDF link annotation
    • http://geosen.net/free_templates_for_blogger_2018ok299.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387922/normal_600dd2e6eaf7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367277/normal_5fcabcc1cfff2.pdfIn PDF document text
    • https://cdn.sqhk.co/rezeribevi/irhRigF/poetry_define_ballad_stanza.pdfIn PDF document text
    • http://reduslim-italiaoficial.site/ca_final_costing_new_syllabus_notesykrg2.pdfIn PDF document text
    • http://shoppermarket.online/174072468361bkb7.pdfIn PDF document text
    • https://cdn.sqhk.co/dodagirojep/jbVijlS/starcraft_boats_aluminum.pdfIn PDF document text
    • http://bitjoms.xyz/awkward_season_1_episode_19gbqt.pdfIn PDF document text
    • http://temilops.xyz/batman_arkham_knight_gcpd_riddler_informantmnz0g.pdfIn PDF document text
    • http://avtoshtorki.shop/android_programming_the_big_nerd_ranch_guidefc5ey.pdfIn PDF document text
    • https://cdn.sqhk.co/jilebodetifa/iegjCji/pijidamifenipifuwukut.pdfIn PDF document text
    • http://zanartcc.net/baazigar_song_mp40n7th.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409243/normal_5fc90a524551e.pdfIn PDF document text
    • https://cdn.sqhk.co/difigobon/cThjLzd/88133947836.pdfIn PDF document text
    • https://cdn.sqhk.co/jufebarur/5ifSTia/57511019207.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476569/normal_5ff2353c45392.pdfIn PDF document text
    • http://br1.red/7575869729381q3m.pdfIn PDF document text
    • http://otomail.business/tifadoverenikyk6a1.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/chiehiR/kezusudolakiboxolirisira.pdfIn PDF document text
    • http://look-hotel.com/sixelezalenokqs1.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
    • https://s3.amazonaws.com/lorifumofelu/shinchan_cartoon_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/65491397931.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/bhagavad_gita_dictionary.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/density_of_hot_rolled_steel_sheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA5 4904 bytes
SHA-256: 18662283a3427906e3ccad7ace24e0750e03a6f43831f0906c0a64e03345c586
font_01_sfnt_off0000f050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF050 11128 bytes
SHA-256: 4e317e6dcae230955c3ab539a81cf429488232e10ef0b82eec9d5552d95aabbc
font_02_sfnt_off000115ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115CE 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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