Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b923fbb856c3bd4…

MALICIOUS

PDF

86.3 KB Created: 2021-04-05 03:24:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2da384efbb99dbca19950bb73509684 SHA-1: efc18eed344ca67c32be33637c647ac2c6ff2af7 SHA-256: 9b923fbb856c3bd42744b74d577f4e7d2512307272d807917cc2df6263fb2f03
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or phishing attempt. The embedded URLs and the heuristic firings indicate that the document is designed to redirect users to external sites, likely for malicious purposes such as credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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://soxebez.ru/wix?keyword=dbq+the+age+of+exploration+answers
    • https://cdn.sqhk.co/bozutebux/nhchhid/circle_camera_effect_name.pdf
    • https://cdn.sqhk.co/zikonidenijo/ibSXjex/runetonisowofivuz.pdf
    • https://cdn.sqhk.co/kerutadit/jajfgiS/beat_tiles_magic_hop.pdf
    • https://cdn.sqhk.co/pevizopubok/herM72A/bekevatitisiw.pdf
    • https://cdn.sqhk.co/murefazomejo/lMidDJJ/pico_island_vineyards.pdf
    • https://cdn.sqhk.co/gogadibavuta/ijjthdY/mivarexabatunewupovuvuro.pdf
    • https://cdn.sqhk.co/minofavazu/bhcjjwZ/estimator_job_application_cover_letter_general.pdf
    • https://cdn.sqhk.co/sowanigog/jioYOjb/african_hair_braiding_salons_close_to_me.pdf
    • https://cdn.sqhk.co/ratugetaj/309ibKh/61365745099.pdf
    • https://cdn.sqhk.co/satukevaguka/duwKhb2/31832191320.pdf
    • http://kifikawi.66ghz.com/goxizonikizinezemoxujede.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://jatuner.epizy.com/walkie_talkie_motorola_mr350r_manual.pdf
    • https://40ba1f7a-6e91-49bb-bbb8-dfbb40a2bc60.filesusr.com/ugd/22bf55_d849334ce6ad48bcaf5d4384fa21b974.pdf?index=true
    • https://ee60c613-3dd1-430d-b711-08e3dcbf0273.filesusr.com/ugd/19ce5d_fe41662d32b0442b86d451034bfea8d5.pdf?index=true
    • http://zowonotetejubi.rf.gd/does_the_audio_technica_lp60x_need_speakers.pdf
    • http://dazoxamawix.rf.gd/43476730525.pdf
    • http://jufosuliz.epizy.com/jaspersoft_subreport_not_showing.pdf
    • http://nuxumejaxumem.epizy.com/gugolagiwebojalud.pdf
    • https://ab60d57a-1f92-408f-9079-0b325776b613.filesusr.com/ugd/724fb5_38152ca26588495495563d89008dcf86.pdf?index=true
    • https://s3.amazonaws.com/begijufadi/has_returned_or_is_returned.pdf
    • https://s3.amazonaws.com/jixeremipet/wpri_12_reporters.pdf
    • https://38aad9b5-7a72-45b8-ac81-9fe73ce82000.filesusr.com/ugd/08338c_3b69a4ac0c594f23a1281a7300d549f3.pdf?index=true
    • http://sugebajofurite.rf.gd/fowizukujewo.pdf
    • https://s3.amazonaws.com/putelekireza/96571648737.pdf
    • http://gugitetororu.rf.gd/44935280542.pdf
    • https://s3.amazonaws.com/lezopobigeza/90076176649.pdf
    • https://f55c6975-0091-4942-a106-dc80285e5f9d.filesusr.com/ugd/8a4248_b700184befa243eabc08a88e0566dd77.pdf?index=true
    • https://s3.amazonaws.com/tokit/el_pollo_loco_brc_nutrition.pdf
    • http://retelowanudugut.epizy.com/atwood_water_heater_manual.pdf
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001039d.bin
9c1437bb30ba5f5be8bb6eccff7e6f4f5b228e733ebe9970683b332901d1f969		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1039D 5376 bytes
font_01_sfnt_off000115ec.bin
6480ae893cad620d4cc80a98843a9d523fcdc0ef55ecc50339e02d524c5bd2f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115EC 11604 bytes
font_02_sfnt_off00013d55.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D55 4324 bytes

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