Malicious PDF — malware analysis report

Static analysis result for SHA-256 a580abf842b71f87…

MALICIOUS

PDF

79.6 KB Created: 2021-04-03 20:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0d8e2a46251ee0784202477cc32d7574 SHA-1: 6ac46061fd0f6f8bd2b2f4b7ff647195fd4e4a53 SHA-256: a580abf842b71f87acbf1b1acb37b096fff3811872d29a270f3926bd4f3268d1
136 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The document body and heuristics point to a lure related to 'Briggs and Stratton vanguard 23 hp carburetor', which redirects to the URL https://ponafet.ru/strik?utm_term=briggs+and+stratton+vanguard+23+hp+carburetor. This URL is likely part of a phishing campaign designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/strik?utm_term=briggs+and+stratton+vanguard+23+hp+carburetor PDF link annotation
    • https://cdn.sqhk.co/filomada/9rOiig4/truck_icon_free_vector.pdfIn PDF document text
    • http://navevukosuso.mypressonline.com/the_shining_twins_now_meme.pdfIn PDF document text
    • http://compte-cmbretagne.best/lr_androids_dokkan_battlece6sp.pdfIn PDF document text
    • http://xoziduso.mypressonline.com/regional_rural_bank_syllabus_2020_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/jgc1gqh/10290057401.pdfIn PDF document text
    • https://cdn.sqhk.co/kawurefeki/7ghZheP/hungry_shark_world_movie.pdfIn PDF document text
    • http://zelopaqq.xyz/643688712884zm1h.pdfIn PDF document text
    • http://hellochildren.online/angelcare_ac401_kanal_wechselnb9x4v.pdfIn PDF document text
    • http://momsmall.space/gi_sheet_gauge_chartqa84q.pdfIn PDF document text
    • http://chelobaka.space/watch_my_hero_academia_heroes_rising_google_docsasmup.pdfIn PDF document text
    • http://tuvivukaroj.mygamesonline.org/46600330487.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/wolina/sociologija_religije_hamilton.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/epic_handshake_meme_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzakob/41537371614.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/lujasebugibin.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/zisal.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/django_admin_template_github.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/37249552188.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/77253874839.pdfIn PDF document text
    • http://jukasuxoseki.atwebpages.com/acidosis_metabolica_cronica.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

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB25 5728 bytes
SHA-256: 0fdd565bd4b0681065d3dcab609b2589a125f89fcea9793e6b828150ca14a1c0
font_01_sfnt_off0000fe97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE97 10592 bytes
SHA-256: 47b867e876df737252752f6c5f1ca4033f2277eb28b09d5ed57addaaf2bc91f7
font_02_sfnt_off00012297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12297 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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