Malicious PDF — malware analysis report

Static analysis result for SHA-256 27316d949f1aa6b5…

MALICIOUS

PDF

106.4 KB Created: 2021-03-26 05:07:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b9f396d89537d4fd05a47e6c0ef91b88 SHA-1: 68f6639e245c199e5c537e17a31846b4bcf960ed SHA-256: 27316d949f1aa6b56a2c52ab2adec3c489a1ee2798ccf47867fda9dc70fdfcd7
126 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to disposable hosting or link farms, suggesting a phishing or malware distribution attempt. The PDF structure itself is also flagged for containing duplicate object bodies, a common obfuscation technique. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://zajinet.ru/award?keyword=monotheism+and+polytheism+pdf PDF link annotation
    • https://lodipututu.weebly.com/uploads/1/3/4/7/134765193/jevototebarofogedabe.pdfIn PDF document text
    • http://mixonajoko.iblogger.org/stanford_anesthesia.pdfIn PDF document text
    • https://cdn.sqhk.co/tosilura/b7j47rq/guardian_tales_guide_world_2-_5.pdfIn PDF document text
    • https://tizojutatow.weebly.com/uploads/1/3/1/4/131406606/7cca58fd18687.pdfIn PDF document text
    • https://xesinuvukuwufo.weebly.com/uploads/1/3/0/7/130776104/5906678.pdfIn PDF document text
    • http://weduwili.iblogger.org/73114419335.pdfIn PDF document text
    • http://nickned.me/tuzidawibemuxolimavawadubipx53.pdfIn PDF document text
    • http://boxberry-24.cc/ie-_3000-_8tc_data_sheetfmrdh.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/3d_text_effect_psd_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/how_big_is_a_32_bit_int.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/hcUMVgf/xitubulisipijiju.pdfIn PDF document text
    • http://lastmarkt.ru/burutamudevavusoreditivt449f.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/hEHwjbC/arctic_wolf_287bh.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/34786311344.pdfIn PDF document text
    • https://jilusuno.weebly.com/uploads/1/3/5/9/135958885/dfc18d.pdfIn PDF document text
    • https://majojolug.weebly.com/uploads/1/3/4/5/134595566/cde7380f1162.pdfIn PDF document text
    • https://cdn.sqhk.co/banifiga/idjd4gc/descargar_earn_money_for_free_with_givvy.pdfIn PDF document text
    • http://raifaisentgo.online/suzuki_violin_book_4_piano_accompanimentx1qyb.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/fidajodup.pdfIn PDF document text
    • http://acupofjacob.com/student_exploration_carbon_cycle_answershhxgh.pdfIn PDF document text
    • http://pubgucbayim.com/music_album_websites_freeqoxth.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pakafadudu.epizy.com/what_is_total_coliform_in_well_water.pdfIn PDF document text
    • http://rajasoxavilal.rf.gd/guardian_angel_prayer.pdfIn PDF document text
    • http://wokonudiru.epizy.com/79916766981.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://scripts.sil.org/OFLIn PDF document text

Related samples 7

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_off00016520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16520 5292 bytes
SHA-256: 87112d2650a1b9b75ed6cfbe375e4c1a0c63dd828b3b456ef36356029e204398
font_01_sfnt_off00017713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17713 12872 bytes
SHA-256: d975c611dcfa452030f40b3b58d6e1d23129f3565de5f6f0b07432c40e25f059

Open this report in the interactive analyzer, or submit your own file for analysis.