Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7b9dbae3a07ca74…

MALICIOUS

PDF

119.4 KB Created: 2021-03-15 21:48:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2c89d2ec0532ca3016f95b1a31fa85f SHA-1: 2447c9fe8eb4f47db14b5cb63145ded15fb37222 SHA-256: d7b9dbae3a07ca74f80af287b57d2b43caac92574e52d9d44c9d4540d1f987bc
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The embedded URL and document body content suggest a lure related to 'GST tax slabs 2020 19 pdf', which is likely a pretext to trick the user into visiting the malicious domain. No scripts were extracted, but the PDF structure itself contains the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/award?keyword=gst+tax+slabs+2020+19+pdf
    • https://static.s123-cdn-static.com/uploads/4480387/normal_5fc89788a3d23.pdf
    • http://lesorurudefige.iblogger.org/is_there_a_procreate_for_windows.pdf
    • https://static.s123-cdn-static.com/uploads/4496605/normal_5fe0d25d223c2.pdf
    • http://wumakelanatug.22web.org/exploring_science_8j_answers.pdf
    • http://jazesenebadajak.iblogger.org/template_strings_appendchild.pdf
    • http://jigikujed.scienceontheweb.net/the_secret_sharer_joseph_conrad.pdf
    • http://paselon.getenjoyment.net/64647762632.pdf
    • http://lidedapomegila.iblogger.org/arthrosis_deformans_symptomen.pdf
    • https://cdn-cms.f-static.net/uploads/4446035/normal_60443e04dc9b2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gomusogo.rf.gd/wakagozanepalewelitewonu.pdf
    • https://e966359d-176b-477a-9ad9-c314bea94227.filesusr.com/ugd/fa6f14_00310a240d6d4813ad08ca2d497a131e.pdf?index=true
    • http://sugobuven.rf.gd/jenn_air_range_hood_cleaning.pdf
    • http://pititonekeget.epizy.com/why_is_my_hp_laptop_saying_plugged_in_not_charging.pdf
    • https://7fe6b731-3703-45da-bcbe-faf39b4d3392.filesusr.com/ugd/880a7e_5cd2bf64ac5d429d9e3352fdbe549d73.pdf?index=true
    • http://dojidusajotat.epizy.com/banglarbhumi._gov._in_khatian_plot_information_map.pdf
    • http://nexoradi.epizy.com/10757975923.pdf
    • https://c0cead0d-5248-483d-940e-95cc3acd9bde.filesusr.com/ugd/20d83a_c2a7333f43cc4e319320b540a4752e18.pdf?index=true
    • http://datavofunuta.epizy.com/bandeya_dil_juunglee_video_song.pdf
    • http://dinoxisajuz.rf.gd/2048862323.pdf
    • https://06ebba1c-c738-45d4-b58d-83edbdcc9420.filesusr.com/ugd/b14caa_644b64066d5644db987263ac56d569b3.pdf?index=true
    • https://7be326e9-a1fd-4761-a84c-83c904220737.filesusr.com/ugd/37e945_facdb976982d470a908f244294dd1c9c.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_off00019633.bin
077732287f361dbd83b3253ee403becf0bf666261b5dbb9fc0eeccc5a5b075e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19633 5660 bytes
font_01_sfnt_off0001a98e.bin
6c0fd3b6932445b3520ecd6d8a2a2fb6e0315716f9dda571d99d663e83ceab43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A98E 11288 bytes

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