Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fed7d32a64147dc…

MALICIOUS

PDF

83.8 KB Created: 2021-03-10 02:38:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: bb11a366b3e9d0a6dc959cd1aea77837 SHA-1: e9513cf7bc94d2379ad7e8faec9726bae82866e9 SHA-256: 8fed7d32a64147dc1998b13cdd8e38047f9bac5bafa2297b5122dae83baac997
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are associated with link farms, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though partially corrupted, contains text related to making extra money, reinforcing the lure.

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://resalured.ru/aws?utm_term=how+to+make+extra+money+on+the+side+from+home PDF link annotation
    • http://vomimaforotagi.mywebcommunity.org/68906599947.pdfIn PDF document text
    • https://cdn.sqhk.co/duxisabaza/hlgfRhe/galaxy_at_war_online_simulator.pdfIn PDF document text
    • https://cdn.sqhk.co/minofavazu/RBRkicR/wuzuvojare.pdfIn PDF document text
    • https://cdn.sqhk.co/bofagenined/jagc1ib/brothers_a_tale_of_two_sons_ps3_gameplay.pdfIn PDF document text
    • http://good-production16.site/158043703057ta1j.pdfIn PDF document text
    • http://gojovujewinunuj.mygamesonline.org/ninth_grade_vocabulary_word_list.pdfIn PDF document text
    • http://zoosalon.org/story_of_beauty_and_the_beast_in_hindi1e4ph.pdfIn PDF document text
    • https://cdn.sqhk.co/furigelo/ejeU7jb/daily_planner_2021_etsy.pdfIn PDF document text
    • http://paktum.pro/snapper_riding_mower_seat_springsml6jr.pdfIn PDF document text
    • http://hesap-al-sat.com/metrica_poema_a_julia_de_burgosogpeb.pdfIn PDF document text
    • http://edayafar.xyz/66576802828v7eii.pdfIn PDF document text
    • https://cdn.sqhk.co/mapibeze/qhcrP00/pafinalurawebisitu.pdfIn PDF document text
    • https://cdn.sqhk.co/luwokiseg/8mcihgi/menuwulatijafutageku.pdfIn PDF document text
    • http://buwubaled.mywebcommunity.org/95541364170.pdfIn PDF document text
    • http://copyrightsafetyhelps.com/35472654825aytfg.pdfIn PDF document text
    • https://cdn.sqhk.co/pifajaloro/rgfgfhg/donkey_kong_gameboy_price.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/rQRnPjj/oxygen_saturation_definition.pdfIn PDF document text
    • http://sutovuresas.mygamesonline.org/the_law_of_the_garbage_truck_story.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/296c2785-f968-4e3e-9a38-0df2b32e58b0/2012_peterbilt_386_stereo_wiring_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/521d9b21-d5b2-4d38-90ac-f41d439dabd3/how_to_get_hdmi_to_work_on_hitachi_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afa8080b-e4c3-4b25-811d-1f236f30790e/saluronigezazevuno.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_off000109e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109E8 5400 bytes
SHA-256: e5191c3f12b5a30fc3494e248cc68d47817e01c0ebab2be0c1c84b92458cb5ec
font_01_sfnt_off00011c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C30 11220 bytes
SHA-256: c0a0908c1f41e4259dd87fb2d20cf815f3134538a0671a46cdadc76249173672

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