Malicious PDF — malware analysis report

Static analysis result for SHA-256 052f42d8d68870dc…

MALICIOUS

PDF

78.0 KB Created: 2021-03-12 17:31:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46a1f8c6b58c59efb41162d9a5c97ff5 SHA-1: e7371a8a77f2ded7c6c9629f5ddd3571369ee1d2 SHA-256: 052f42d8d68870dcfa7abdd7c664a8ccd7573ed89b1ce48e115d6853ba5ba32f
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be related to academic search terms, suggesting a lure to trick users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dugedepap.ru/award?keyword=scientific+root+words+prefixes+and+suffixes+pdf
    • https://cdn.sqhk.co/tijinujul/fjfFYad/vodafone_yan_mda_evde_internet_sifre_alma.pdf
    • http://mowewanu.iblogger.org/p90x3_nutrition_guide_free.pdf
    • https://cdn.sqhk.co/kasesiseb/cwRJW0j/find_my_friends_reporting_wrong_location.pdf
    • https://static.s123-cdn-static.com/uploads/4410714/normal_60000ad419ab0.pdf
    • https://cdn.sqhk.co/girewobo/nThehb0/what_causes_endless_runny_nose_and_watery_eyes.pdf
    • https://cdn.sqhk.co/jojojidatun/gejjji8/noponosukepaxalinibixotuz.pdf
    • https://static.s123-cdn-static.com/uploads/4447437/normal_600148ad61091.pdf
    • https://static.s123-cdn-static.com/uploads/4467910/normal_60067d8e34855.pdf
    • https://cdn.sqhk.co/xoripudesew/1hOArGe/my_clash_of_clans_keeps_saying_downloading_content.pdf
    • https://static.s123-cdn-static.com/uploads/4473638/normal_5ffe4690a9ed8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e7815579-0a20-437e-9604-d980f1615808/red_burning_scaly_skin.pdf
    • https://s3.amazonaws.com/retisovojor/rozinuguvupiji.pdf
    • https://uploads.strikinglycdn.com/files/49e3121b-6e94-4130-bcdf-3fce3fa8cef7/daniel_kahneman_thinking_fast_and_slow_quotes.pdf
    • https://s3.amazonaws.com/bevarolimesale/the_cranberries_zombie_piano_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/a5862733-ff89-4ab3-9294-7406a2e2fc8c/pioneer_vsx_1022_remote.pdf
    • https://uploads.strikinglycdn.com/files/9b3e4469-6178-43cc-a736-80509c3395bc/how_to_replace_a_belt_on_a_toro_personal_pace_lawn_mower.pdf
    • https://s3.amazonaws.com/salosibejodod/wipifaviwekavaxepodeda.pdf
    • https://s3.amazonaws.com/gowupuzokowuxes/vufobagomupilofewidej.pdf
    • http://towuvoti.epizy.com/96817370272.pdf
    • https://s3.amazonaws.com/xamibudasagas/adobe_photoshop_cs6_camera_raw_8._3.pdf
    • https://uploads.strikinglycdn.com/files/a00d7383-d994-4c18-acc9-2be47dbddd71/petzl_summit_ice_axe_sizing.pdf
    • http://wumavububutiz.rf.gd/mafuzi.pdf
    • https://uploads.strikinglycdn.com/files/02229923-cad0-4238-8af9-c8ca941b2115/how_to_create_png_image_using_paint.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef45.bin
1d0a194954a5ac5287dac475718584644c2ea9755551dee3cecac50e12fc16c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF45 5380 bytes
font_01_sfnt_off000101bc.bin
5cba31c473c0ae6ba22cd4e209e0ea96dbad0e1313b9373b37310ab492064822		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101BC 12520 bytes

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