Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a1e3894f0d8764c…

MALICIOUS

PDF

75.5 KB Created: 2021-03-20 09:43:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 8b3d19e551f83991983016b6c049d548 SHA-1: 01f8dbb79976f34fe24ff8800be7c363236cd1eb SHA-256: 2a1e3894f0d8764c7ad4268e625ca07f08cf788f8ac9d847d0efa4e69c17af53
126 Risk Score

Malware Insights

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

This PDF file was flagged by an ML classifier as malicious. It contains a large number of external links, many of which point to disposable domains or link farms, suggesting a SEO-based redirection scheme. The document body, though heavily obfuscated, appears to be a lure related to a 'trophy guide', likely intended to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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://maypoin.ru/wix?keyword=little+dragons+cafe+trophy+guide PDF link annotation
    • https://cdn.sqhk.co/linidivez/ib1hcsC/10747791123.pdfIn PDF document text
    • http://vimosenap.iblogger.org/pabim.pdfIn PDF document text
    • https://katesagi.weebly.com/uploads/1/3/4/8/134864962/cb44a6.pdfIn PDF document text
    • https://lulofaki.weebly.com/uploads/1/3/1/4/131453598/fogegabemozox.pdfIn PDF document text
    • https://wipasajumavadus.weebly.com/uploads/1/3/4/7/134775966/xibeluzegitepuroxiso.pdfIn PDF document text
    • https://fudukonuxevefez.weebly.com/uploads/1/3/4/6/134606022/tuwovibupixopi_nizapiregiweret_zoborakov.pdfIn PDF document text
    • https://cdn.sqhk.co/rowunozimop/hjghgjd/moto_x3m_unblocked_games.pdfIn PDF document text
    • https://cdn.sqhk.co/xajamenujo/PrTcidz/4941489042.pdfIn PDF document text
    • https://pedogore.weebly.com/uploads/1/3/2/8/132815008/28dcf5cd2.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
    • http://dakezemafatelo.epizy.com/69698325286.pdfIn PDF document text
    • https://07e0a16e-b77d-475b-b724-88bbaedb347c.filesusr.com/ugd/8e9e2f_c233da8f88554380ad5dd37cf253314d.pdf?index=trueIn PDF document text
    • http://punolubumima.epizy.com/8757027301.pdfIn PDF document text
    • http://vebaxabono.epizy.com/80218389364.pdfIn PDF document text
    • http://gurimufibefuw.rf.gd/dsc_pc1616_pc1832_pc1864_installation_manual.pdfIn PDF document text
    • http://kefixofelapadi.epizy.com/cthulhu_dark_ages_character_sheet.pdfIn PDF document text
    • https://ad858f6a-7bbb-416d-9365-e04d7986ed9b.filesusr.com/ugd/3c9ac1_03fdb8e2f265423db43240d1ca248d9d.pdf?index=trueIn PDF document text
    • http://rinaditinimi.epizy.com/53455879983.pdfIn PDF document text
    • https://d451e762-8e00-4155-9971-9512d28d2528.filesusr.com/ugd/b52961_8fe540810ac44def93e26f9bc7db8526.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB07 5344 bytes
SHA-256: 0ef7dd49c77b7b5226c9664df7f4837d31482d1068aa5be21ffbe6cde95e399d
font_01_sfnt_off0000ed2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2C 11080 bytes
SHA-256: f1d01acb7f20e07b53f614d1d73bcf7a19bace3250bc183de82fdfabca79d002
font_02_sfnt_off000112fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112FC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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