Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fca896e87fd6c87…

MALICIOUS

PDF

118.4 KB Created: 2021-06-01 23:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 3ee5d82777d33f831f2f9c7d2d69a1a6 SHA-1: b912917e93d1b0821104ef6fbeb0b9ec0dc48dda SHA-256: 7fca896e87fd6c87948ff741bd6c0e5b030fb1c12880ea2eaec0961d6bd1559b
166 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ML models and ClamAV, and exhibits characteristics of a link farm designed to redirect users to external sites. The presence of a `curl` command sequence in the document text suggests an attempt to download and execute further payloads, likely from one of the embedded URLs. The document's content is obfuscated, but the overall pattern indicates a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/123?utm_term=amur+leopard+fact+sheet PDF link annotation
    • https://likunemotiro.weebly.com/uploads/1/3/5/2/135299998/jizatupulisamor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464527/normal_5feee9bf39148.pdfIn PDF document text
    • https://zoparojo.weebly.com/uploads/1/3/4/7/134762662/67242c4b6d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466676/normal_600537ca6d98a.pdfIn PDF document text
    • https://kixakusafi.weebly.com/uploads/1/3/4/8/134891224/dakomogek-zamada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417523/normal_60164c78313fa.pdfIn PDF document text
    • https://navanelesud.weebly.com/uploads/1/3/0/9/130969746/4989c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481423/normal_6000e6afb8cc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372360/normal_603d01cb2fb3b.pdfIn PDF document text
    • http://localhost:8090/api/v1/ansible/playboIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://finebov.pbworks.com/w/file/fetch/144441015/xl830l_multimeter_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2564dac7-890f-4714-9db3-80280c3fadb8/zidelogatopezupowidomu.pdfIn PDF document text
    • http://ruwomodanom.pbworks.com/w/file/fetch/144446772/tojoxawejajofidopos.pdfIn PDF document text
    • http://barumena.pbworks.com/f/gta_san_andreas_sivil_polis_arabas_ifresi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/920a3b23-9a52-45f8-9a17-aff99862d633/linomalilal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea44965a-995c-4172-81c4-644d8a32e4b3/yamaha_rx-v379_subwoofer_setup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b6aff8b-a7d3-4e5e-809e-3b0958874645/qualitative_research_design_example.pdfIn PDF document text
    • http://zuvevetub.pbworks.com/f/fnaf_1_demo_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d618fd5a-db14-44ad-9abf-48d1168abbbf/epson_artisan_835_printing_problems.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3D 43032 bytes
SHA-256: 7125651a792ac0a0d49e1fdb4dd756e4cf6e2a48bbd6960fcf651f633ec50961
font_01_sfnt_off000171e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171E5 5384 bytes
SHA-256: 402b2523e33f60f6fae16f94ad40172a29a31b0f278268022ca5b94fa352446a
font_02_sfnt_off00018402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18402 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_03_sfnt_off00018c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18C8F 12508 bytes
SHA-256: 32fbba573b276c29040168aa3e62ef461ff743307307b5f1ede10bb7475e0bd7
font_04_sfnt_off0001b709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B709 16036 bytes
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940

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