Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9c88503987db107…

MALICIOUS

PDF

72.7 KB Created: 2021-03-03 22:46:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 19e5499d51e5d7cfb7412b0c2a3eed57 SHA-1: 3a782cf219a3188ff323b26b10c8beca5e74e50f SHA-256: d9c88503987db107f8947f0a29972569a6b3a6591bd3925f04385ff583af2742
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://golowaki.ru/wix?keyword=in+search+of+sanity+pathfinder+pdf PDF link annotation
    • https://cdn.sqhk.co/mixubiki/icAAgcJ/28041159708.pdfIn PDF document text
    • https://cdn.sqhk.co/lanuniwa/ificShd/alone_zombie_movie_streaming.pdfIn PDF document text
    • http://dupuladusudired.mypressonline.com/roald_dahl_boy_tales_of_childhood_book_review.pdfIn PDF document text
    • http://pixunune.sportsontheweb.net/is_harry_potter_on_amazon_prime_video_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/xifobariw/ahlgcgc/gizixorevifokadugatetub.pdfIn PDF document text
    • https://setasavapu.weebly.com/uploads/1/3/2/6/132683041/gutukadivelopa.pdfIn PDF document text
    • http://ruwemipuwev.mypressonline.com/fexawovuxalawosav.pdfIn PDF document text
    • https://cdn.sqhk.co/merabuvi/jbghjjM/xevowan.pdfIn PDF document text
    • https://kezidixujaroko.weebly.com/uploads/1/3/4/0/134040737/bujakibinu.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/hbLexls/bekijolusamobitiw.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/idjhXjh/disney_premier_access_cost_australia.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rogofideb.onlinewebshop.net/download_foxit_phantompdf_full_crack_for_mac.pdfIn PDF document text
    • http://tasefabomodewiv.epizy.com/how_to_calibrate_samsung_frame_tv.pdfIn PDF document text
    • http://mopawok.epizy.com/biosynthesis_of_pyrimidine_nucleotides.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/personal_whatsapp_stickers_app.pdfIn PDF document text
    • http://vedebimefawimad.rf.gd/muninuzipiwokofibov.pdfIn PDF document text
    • http://pizitibasowu.atwebpages.com/munsons_fluid_mechanics_global_edition_solution_manual.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_off0000e12c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12C 5248 bytes
SHA-256: d679e76df1e1a3309c6e003db335be9ea4e6f63e9d7bb57e84b7e537742a7a8d
font_01_sfnt_off0000f30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30D 9972 bytes
SHA-256: 6e4cd5c045b8c1e429d8176fc338a9887980a800486168616e55af5ac15ad215