Malicious PDF — malware analysis report

Static analysis result for SHA-256 44dc831d372315ff…

MALICIOUS

PDF

66.0 KB Created: 2021-04-04 11:47:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f993fbbca28745c51a8576d31f199132 SHA-1: a7d9bd2a919d3380ccdc932499d3b3b8a0073fc4 SHA-256: 44dc831d372315ff7716633da81cc69395d0714950396a5cb04e6543052bf4ce
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with the primary one being https://nipisod.ru/wix?keyword=dokkan+battle+reroll+guide+reddit, suggesting a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of common techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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://nipisod.ru/wix?keyword=dokkan+battle+reroll+guide+reddit
    • http://mavogevuz.getenjoyment.net/52139823817.pdf
    • https://cdn.sqhk.co/penomufepuk/jZqYrHI/kepajudeburawadune.pdf
    • http://ogranicbio.fun/color_psychology_in_logo_design66ggc.pdf
    • http://warowusavi.mywebcommunity.org/graco_nautilus_3_in_1_car_seat_replacement_straps.pdf
    • http://lamenomapod.iblogger.org/dulitojiv.pdf
    • http://xejevojesinil.22web.org/gusomupofasuj.pdf
    • https://cdn.sqhk.co/samanugutu/RKchbDi/crafty_crab_alexandria_alexandria_va_22304.pdf
    • https://cdn.sqhk.co/xuxibila/haRgjhb/delivery_tip_tracker_free.pdf
    • https://cdn.sqhk.co/pabelemusib/eggrVaW/microsoft_office_2010_kms_activator_free.pdf
    • https://cdn.sqhk.co/jumupebuvi/ggih1gf/mesolumurokefagux.pdf
    • http://smartroom.pro/25435730000yahb6.pdf
    • http://trycabinets.xyz/mcculloch_mac_3200_chainsaw_specs6vxfd.pdf
    • https://cdn.sqhk.co/gidufulelav/d3F2ghE/space_exploration_mars_rover.pdf
    • http://zivasajotafu.iblogger.org/bundesliga_spielplan_fc_bayern.pdf
    • https://cdn.sqhk.co/bomumuxa/e4kiaFk/dorifuf.pdf
    • http://xutefizil.getenjoyment.net/wavojojuzujevogusu.pdf
    • http://avtovishki-msk.ru/mere_ghar_aayi_ek_nanhi_pari_remix_mu75ls.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://52688b3e-b8ec-4a35-9488-8ca35a680c7b.filesusr.com/ugd/7dd30d_98a456d4898b4937b8ddbb8bee5993ba.pdf?index=true
    • http://zavukazena.epizy.com/91520313759.pdf
    • https://c2bc7a71-cb21-434c-84f6-8d2fc09ed56d.filesusr.com/ugd/03ae60_4b22f77038e14ba899dbb05f4cd668e7.pdf?index=true
    • https://f6ce3cfb-f922-470c-9e0e-eaf724001b0e.filesusr.com/ugd/defcb2_96f20a212c014d1cb00a2b0d2d3676d3.pdf?index=true
    • https://8860adff-7f0b-4cf3-a358-cdd560dff136.filesusr.com/ugd/625844_7239a8e5aa3847df8a412558f9a9710f.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c594.bin
4f0709b605d8131dd553a4e623fb7d16d5c884d5c2b43ebfc6ebe361465b89fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC594 5016 bytes
font_01_sfnt_off0000d6b7.bin
7770fccdab5a27b66b6f35088999179b9ad37ea31c021faf07453dfe540e0c8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B7 10576 bytes

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