Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee182da63dba247e…

MALICIOUS

PDF

62.8 KB Created: 2021-02-11 06:45:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 25c3b65680cd48bb49d3ee7be1d60a7a SHA-1: 57c4b6c1fbf643db0bb748fd7deecd7a09fd9c17 SHA-256: ee182da63dba247e1ec964994aece719f6f76763cc37792a7ffe27ff95ba3cfc
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs, including one that appears to be a search result lure for a manual. The PDF is also identified as a link farm on disposable hosting, suggesting it's part of a phishing or malware distribution infrastructure. No scripts were extracted, but the overall structure and URL analysis point to a phishing or malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://baarspo.ru/wb?keyword=athey%20mobil%20sweeper%20manual PDF link annotation
    • http://com-connexion.xyz/rupajebobepejimulufadezu5zf4w.pdfIn PDF document text
    • http://wordsideget.top/3187945591671q6y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497638/normal_5fdf54d568cfc.pdfIn PDF document text
    • https://xododasewa.weebly.com/uploads/1/3/4/6/134600374/e0edb791ce17e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417040/normal_5fee6583ee4ce.pdfIn PDF document text
    • http://7lessons.website/airplane_games_for_windows_76lwpt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375522/normal_60027bf7bf376.pdfIn PDF document text
    • http://mmuuue.space/tiximusarovijubodelodtirkd.pdfIn PDF document text
    • http://bred-enligne.com/nufemopi6m285.pdfIn PDF document text
    • https://liritetujom.weebly.com/uploads/1/3/5/3/135310948/wazuxajofikesanazafa.pdfIn PDF document text
    • https://ponozivodu.weebly.com/uploads/1/3/0/7/130775347/58d20399f54d432.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503050/normal_60241ae071b1a.pdfIn PDF document text
    • http://bristol-yalta.run/tawuruxipopogoluhk9bq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vulusopotu.epizy.com/noes_de_administrao_publica_para_concursos.pdfIn PDF document text
    • http://gafazexetoraxik.epizy.com/53933741148.pdfIn PDF document text
    • http://pimoked.rf.gd/39382881854.pdfIn PDF document text
    • http://pebulibupa.rf.gd/calendario_noviembre_2018_mexico.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_off0000b83d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB83D 5384 bytes
SHA-256: f49926d7b94fbb0b9af499e40b3cd8e8504c78788218299c4c565c678530be3a
font_01_sfnt_off0000ca6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA6E 10372 bytes
SHA-256: 2c6430fd1396d3f9d2ca0878dda37fb24e69d71fa6195968920d7f5e6462b085

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