Malicious PDF — malware analysis report

Static analysis result for SHA-256 1748dd12da08810d…

MALICIOUS

PDF

79.4 KB Created: 2021-05-12 01:11:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e8457d52daf28938ecaadfe31ff2044 SHA-1: dcdeda98e2a167e8e36563dd1293edcf2cdffd7d SHA-256: 1748dd12da08810d6e0719761d099fff4aa469d7def14b8efe87eac6e22a2f02
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or link farm attack. It contains numerous external links, with one prominent URL pointing to 'ponafet.ru'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results or redirect users to malicious content. No scripts were extracted, but the presence of external links and the overall structure strongly suggest a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=long+range+baofeng
    • https://cdn-cms.f-static.net/uploads/4453729/normal_5fe6a084bc509.pdf
    • https://murerodotabuvo.weebly.com/uploads/1/3/5/3/135327115/lijokemibupo-rodikebafabel-gadomedol-sazonalolewabil.pdf
    • https://cdn-cms.f-static.net/uploads/4416316/normal_6041296315e2e.pdf
    • https://rirulejirosajis.weebly.com/uploads/1/3/4/3/134320684/linafu.pdf
    • https://cdn-cms.f-static.net/uploads/4386828/normal_605fbdb44d951.pdf
    • https://cdn.sqhk.co/vizelupavew/bjd6yy2/word_scroll_search_find_word_games.pdf
    • https://bogobesupagal.weebly.com/uploads/1/3/0/7/130775478/eb446eb8.pdf
    • https://tavabaxo.weebly.com/uploads/1/3/1/0/131071290/81ba222.pdf
    • https://cdn.sqhk.co/vomemubevu/KKjhkgj/duck_hunter_sauvignon_blanc_2019.pdf
    • https://cdn-cms.f-static.net/uploads/4420020/normal_6023049b12c9d.pdf
    • https://cdn.sqhk.co/wemitupu/fDC2Oia/lozuzobog.pdf
    • https://cdn.sqhk.co/kifukuvitog/ihW8jaU/46247536281.pdf
    • https://zobagitolofoxaz.weebly.com/uploads/1/3/0/7/130739917/fizoropafonovo-taxinirejuru-wibutalatijutu-zerabez.pdf
    • https://cdn.sqhk.co/zurajekiviw/fjjCvM9/wizuravar.pdf
    • https://cdn.sqhk.co/vilubofi/iDhbehd/wefodeverenevezafiro.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/9e2f3344-7649-4e6f-874a-d6558530a687/xidosipijesivigiruwiz.pdf
    • https://27158da8-170d-48ca-a528-b8ced62fe517.filesusr.com/ugd/9fc8c3_1d15ff16497a41feaad33f2c0182e244.pdf?index=true
    • https://288c7b4b-0494-48f6-8ee2-9dd519b96b0a.filesusr.com/ugd/a107db_b1e840691e884697869c5d6548ca90a7.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c35b64c7-d7e1-4b82-b4e5-9a88f89b9595/what_are_the_causes_of_curriculum_innovation.pdf
    • https://4d3f6715-1114-433d-a4b7-45a5e22e3858.filesusr.com/ugd/ce86b4_e1d1b35a1a2747b88edfc3af2fb7a1e0.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b1a9f38c-3c01-4c3a-a321-9a7f026bd81b/mevew.pdf
    • https://08c3cc13-1ce0-4add-927e-a3aed263473e.filesusr.com/ugd/ccf397_dab1a752f6514b3c9b138235a06e9529.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d719.bin
fa1fd784bc91464b34cb8c58468329331860001a2d62c98e401067cf9746a56e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD719 4464 bytes
font_01_sfnt_off0000e646.bin
82d28a64e8efe1e1b74ae3c3861337f477542dba5fe10e4adadb9ab8ff6b0e92		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE646 11316 bytes
font_02_sfnt_off00010c34.bin
b1b93bf558ee65cf174bdde98fc70b39c77ddcfeef9d3a00758a58eb2f24951c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C34 16260 bytes
font_03_sfnt_off000121a9.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121A9 4324 bytes

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