Malicious PDF — malware analysis report

Static analysis result for SHA-256 71a43556392cc782…

MALICIOUS

PDF

82.2 KB Created: 2021-03-30 21:57:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bd5221e0b5b8bf32d7641af374b72f3 SHA-1: 755dbc922b6146237697c3908acc42842051e989 SHA-256: 71a43556392cc782ce3d7a8577d5d796c56f7cfab9b9d9385471a2311f2cb347
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. The document contains a large number of external links, suggesting a link farm or phishing attempt. The primary URL, https://ponafet.ru/wix?keyword=xwidget+pro+apk+cracked, appears to be a lure for potentially unwanted software or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=xwidget+pro+apk+cracked
    • http://zatodawu.iblogger.org/which_is_better_oil_filled_radiator_or_convector_heater.pdf
    • https://cdn.sqhk.co/kivipemo/CFgdiND/wobokosomapodotiw.pdf
    • https://farazekij.weebly.com/uploads/1/3/4/3/134379469/4635424.pdf
    • https://lemoxubasox.weebly.com/uploads/1/3/4/3/134329143/digolaresedofifida.pdf
    • http://donbetosstreettacos.com/intel_high_definition_audio_driver_download_windows_7_32_bitd9gg2.pdf
    • https://cdn.sqhk.co/rabataxuvax/8iaicQN/ladybug_keyboard_theme_wallpaper_hd.pdf
    • https://janejamav.weebly.com/uploads/1/3/4/8/134887015/lapufijajufoganugoze.pdf
    • https://zukutalemuz.weebly.com/uploads/1/3/4/5/134582669/rowomowakex.pdf
    • https://vulabomanuxuw.weebly.com/uploads/1/3/4/8/134857085/3026333.pdf
    • http://netewe9.xyz/ch_7_tv_guide_brisbanetupuw.pdf
    • http://idealslimitalia-official.site/ufc_253_results_play_by_playdz1x2.pdf
    • https://pawupakupofodav.weebly.com/uploads/1/3/5/3/135388754/xonirotulu_zozazizizona.pdf
    • https://cdn.sqhk.co/xibetevoxaj/dIAiaGm/1521489255.pdf
    • https://cdn.sqhk.co/wixadigizal/vifhhij/33759608809.pdf
    • https://zoninezazazi.weebly.com/uploads/1/3/1/0/131070362/3045467.pdf
    • https://cdn.sqhk.co/tasokuxu/i5Lhcgc/nowenizojemezopewen.pdf
    • https://fodigedij.weebly.com/uploads/1/3/2/7/132740281/fuwiv-tevurile-fezas-dabegemigugi.pdf
    • http://belplitka.ru/jimudowamumutohcncu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://bubewap.rf.gd/censor_board_copy_movies.pdf
    • http://fekalalorupip.rf.gd/rojesogo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9c7.bin
d6f713b3fc49c635fe454031ace0805c0c4d5232ac808f3871d4c481b260b865		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C7 3048 bytes
font_01_sfnt_off0000f48d.bin
1fa13fd19ff60d67fc34aa3dffdcfb50bea6a8ac042bbbb8adbbb418a7f44f61		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF48D 4844 bytes
font_02_sfnt_off0001052c.bin
781d17a08a5f90a4c6d41cf33563951bf1a61f9ddaa84fa1cb5d5fca0faf0773		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1052C 11516 bytes
font_03_sfnt_off00012bc8.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BC8 4324 bytes

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