Malicious PDF — malware analysis report

Static analysis result for SHA-256 3015e1da248339a7…

MALICIOUS

PDF

77.1 KB Created: 2021-02-14 04:42:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 9952344b8d9267b262eab2c4d391c2cc SHA-1: abc6979353d2a682993169ece94419dc490b6bda SHA-256: 3015e1da248339a739dc81cca2191b8dcebcf3bd33661fd9d6c8816500ce8cb7
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan distribution attempt. It contains a large number of external links, many pointing to disposable domains, characteristic of a link farm or SEO spam operation. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious content, potentially a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://leonvi.ru/wix?keyword=pound+of+flesh+parents+guide PDF link annotation
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/sodawew.pdfIn PDF document text
    • http://mazafaka69pussy.online/fodakejazazunajzmqvp.pdfIn PDF document text
    • http://ionatr.space/negirimabubulebiml7yip.pdfIn PDF document text
    • http://swiss-gear-top.xyz/8958855224053uqg.pdfIn PDF document text
    • https://cdn.sqhk.co/kawinojos/ovhipid/tajesuvolifab.pdfIn PDF document text
    • https://cdn.sqhk.co/bomoxale/ajfhahc/cheap_diy_outdoor_furniture_ideas.pdfIn PDF document text
    • http://jesepupisiso.22web.org/94995826144.pdfIn PDF document text
    • https://cdn.sqhk.co/murafabu/bzihrfw/free_download_infinity_loop_game.pdfIn PDF document text
    • https://mopopapepiror.weebly.com/uploads/1/3/2/7/132741339/muretenuxifupejural.pdfIn PDF document text
    • http://outputqwvk.space/mit_guide_to_lockpickingbtl20.pdfIn PDF document text
    • https://cdn.sqhk.co/budajawisore/JhfJtie/alienware_610m_mouse_not_working.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419640/normal_5fd3d120b2da5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jesebikalag.epizy.com/psicologos_en_ponce_que_acepten_reforma.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_off0000f0b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B7 5304 bytes
SHA-256: 2947c55050dea347e09c327b084c7795900e07e3c3c73402212f219037a24fb4
font_01_sfnt_off000102bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102BD 11008 bytes
SHA-256: 18b3ed900cfb6a68ae574a012749e21f6fb3d86c81adb4b9a7f377a30dde77a1

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