Malicious PDF — malware analysis report

Static analysis result for SHA-256 afcd97c6aa8064bb…

MALICIOUS

PDF

78.1 KB Created: 2021-03-15 20:51:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 660c2eda54641ad517c70f63e50ac03b SHA-1: c2b43a252b4870e7bb4519829b79ac252b19b9c8 SHA-256: afcd97c6aa8064bb32defd31184143e38c926d159e9d35d6713ce27210544d9f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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://jottigo.ru/123?utm_term=abuelito+who+poem+template PDF link annotation
    • https://busajivajikiguv.weebly.com/uploads/1/3/1/3/131384407/3105956.pdfIn PDF document text
    • https://cdn.sqhk.co/bexefoboxevi/hclhiib/rezafupi.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/punawenijopewusosu.pdfIn PDF document text
    • https://cdn.sqhk.co/moxibusas/eH2J22P/spirax_sarco_steam_tools_app.pdfIn PDF document text
    • http://lapitubemexidi.mywebcommunity.org/how_do_you_convert_julian_dates_in_excel.pdfIn PDF document text
    • http://sugoxebojun.getenjoyment.net/2771267188.pdfIn PDF document text
    • https://zimavilagapiwe.weebly.com/uploads/1/3/2/7/132712623/povimefanixokozisu.pdfIn PDF document text
    • https://xixezowipena.weebly.com/uploads/1/3/5/3/135341666/8645263.pdfIn PDF document text
    • https://cdn.sqhk.co/saboxiwago/fR2hiAi/6623568334.pdfIn PDF document text
    • http://tunewejewuz.mypressonline.com/us_median_household_income_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/duwenaxiseve/jiic18B/heavy_metal_radio_stations_usa.pdfIn PDF document text
    • https://bofuvozera.weebly.com/uploads/1/3/5/3/135331850/3683071.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/clezDjg/58038577651.pdfIn PDF document text
    • https://cdn.sqhk.co/goronikel/eicjjjb/94170632082.pdfIn PDF document text
    • http://suzepiju.iblogger.org/return_label_template_30_per_sheet.pdfIn PDF document text
    • https://kutemipemowu.weebly.com/uploads/1/3/4/8/134860595/507001da9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jumawivowibeb.onlinewebshop.net/dulelexixigexi.pdfIn PDF document text
    • http://jexiduro.rf.gd/article_format_spm_2019.pdfIn PDF document text
    • http://livijakowoleb.rf.gd/zopimisuzaziliwon.pdfIn PDF document text
    • http://naxezutozotos.rf.gd/battle_house_movie_720p.pdfIn PDF document text
    • http://nakeviw.myartsonline.com/dexeluwijisuz.pdfIn PDF document text
    • http://kaloruligot.onlinewebshop.net/63525459150.pdfIn PDF document text
    • http://kalasoziluxolim.myartsonline.com/duvuropovesebafejirodi.pdfIn PDF document text
    • http://javasuk.epizy.com/racing_car_game_please.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 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF285 5004 bytes
SHA-256: 9504b1a5bef77110b23e64c2e9cdc4ed8befabd140e0e7cc79469d596337ebec
font_01_sfnt_off00010371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10371 11000 bytes
SHA-256: 5a88e2fd84fb236cbf4bf97e110fee9dafd1c3305ab90e054b26d100ecdf5afe

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