Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b824107971c3a27…

MALICIOUS

PDF

78.0 KB Created: 2021-05-16 14:10:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 333d54af0bc249e69a7c2ae4ab03bd7a SHA-1: c1a6b1b714e5ac003994879b8eab2678db1767f2 SHA-256: 3b824107971c3a2785a5f3fe443efca1cd030502ef891746df90c5df18d63295
156 Risk Score

Malware Insights

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

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 0.9997

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 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.
  • 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://nipisod.ru/strik?utm_term=hp+p3015+printer+driver+for+windows+7+32+bit PDF link annotation
    • https://poxovoxi.weebly.com/uploads/1/3/5/3/135398301/rinazexasoxitugaxoxa.pdfIn PDF document text
    • https://tajafakedebufu.weebly.com/uploads/1/3/1/4/131438499/sanux.pdfIn PDF document text
    • https://fazajamol.weebly.com/uploads/1/3/2/7/132740605/ruvirikalefu.pdfIn PDF document text
    • https://goxezojukaruvuk.weebly.com/uploads/1/3/4/0/134000107/ce92bd0c.pdfIn PDF document text
    • https://buxexemap.weebly.com/uploads/1/3/4/8/134890763/wagelemuxoraw.pdfIn PDF document text
    • https://wenojobopowegit.weebly.com/uploads/1/3/4/8/134879608/ae85ecbe2c30.pdfIn PDF document text
    • https://rebazizezasij.weebly.com/uploads/1/3/4/5/134586802/8241202.pdfIn PDF document text
    • https://lupolaluxu.weebly.com/uploads/1/3/2/6/132681144/nubadem_mogudaziwux_tifamevi_kepevejid.pdfIn PDF document text
    • https://vogopulopom.weebly.com/uploads/1/3/1/3/131398589/sulazazosenokapoj.pdfIn PDF document text
    • https://dibuponabax.weebly.com/uploads/1/3/4/3/134340508/fetona_buwoki_fasoxegajisit_palavo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dusutokoj.epizy.com/40k_codex_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/70316738727.pdfIn PDF document text
    • http://kadegezopofog.rf.gd/android_10_update_for_oneplus_3t.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/dapple_dachshund_puppy_breeders.pdfIn PDF document text
    • http://xufojeji.epizy.com/54882328366.pdfIn PDF document text
    • http://livikunaxexo.rf.gd/chronic_liver_disease_pathophysiology.pdfIn PDF document text
    • http://panurimo.epizy.com/latitude_7490_spec_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/3w_clinic_fresh_mask_sheet_charcoal_review.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/bitdefender_box_2_user_manual.pdfIn PDF document text
    • http://wazuvit.rf.gd/maggie_and_milly_and_molly_and_may_alliteration.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/salusoxatibafadogepute.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_off0000f1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DF 5740 bytes
SHA-256: f47daa584150b3355b34eeac483e03c236a0b8da788602b3184390bb5aa4939d
font_01_sfnt_off000105a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A7 10920 bytes
SHA-256: 09f88fd92f3da138ec866508ac84c15a43b2eab4058cf663b1f0d2f06116026a

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