Malicious PDF — malware analysis report

Static analysis result for SHA-256 93262ad8082dd1a1…

MALICIOUS

PDF

60.5 KB Created: 2020-11-02 04:13:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 1d2a7e5bbc34710ded1c0d1b41369286 SHA-1: 8914c0273ee71c6e4ea092b8b75208f4e1c5b095 SHA-256: 93262ad8082dd1a1c3748f87e215e318a87498e827f38ca971d9c59268ef896e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically `https://ggtraff.ru/aws?keyword=cisco+ccna+collaboration+study+guide`. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to trick users into clicking it. The presence of multiple links to disposable hosting services further supports a malicious intent to distribute malware or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/aws?keyword=cisco+ccna+collaboration+study+guide In PDF document text
    • https://julapaxukej.weebly.com/uploads/1/3/4/4/134492969/7509527.pdfIn PDF document text
    • https://limisakaxenit.weebly.com/uploads/1/3/4/3/134371081/lotejokojopu-tezamudusab-jujitegalos.pdfIn PDF document text
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/1fdfd4636b.pdfIn PDF document text
    • https://jonipafatanepa.weebly.com/uploads/1/3/2/7/132741476/b095beac59157.pdfIn PDF document text
    • https://vabejodero.weebly.com/uploads/1/3/4/3/134378136/2031329.pdfIn PDF document text
    • https://ligofaxudatejot.weebly.com/uploads/1/3/0/7/130739538/9912396.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/6877c5f1-f1cb-4b7a-b50e-e78593dd542e/45306499250.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28848bde-1b41-409f-b2db-fbbcbd388e1c/sipojazexu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/212cfd18-cb5c-4a71-9611-7afa9e4feb73/33411869603.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/best_hot_chocolate_margaret_river.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/conceitos_de_meio_ambiente.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ad1f756-6dd9-4a53-9cec-1330add49d80/tefid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4442/0775/files/title_of_hindu_priest.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/332f44a1-3228-438a-988d-d687409255e3/11205786486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/2615/1063/files/69740768807.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c832511-7a65-4457-ab29-f24c66c54c76/jamotamalizamejosiwil.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E29 5256 bytes
SHA-256: 37b35ee7f922c2819817e2df15eb010884b179b033a4d2afef5e9d42a3ce99dc
font_01_sfnt_off00009012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9012 15152 bytes
SHA-256: 1f0c77c1a1b76835880677249a9b1229252a897ac636cf4ae97554e2062f0512
font_02_sfnt_off0000c0e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0E7 16132 bytes
SHA-256: 43e84046d57c5d8edad47de9228ce36feb53c5e515436c294a71041590f3a3a6
font_03_sfnt_off0000d5dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5DC 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361