Malicious PDF — malware analysis report

Static analysis result for SHA-256 9102a2dcccb16e3c…

MALICIOUS

PDF

84.7 KB Created: 2021-03-24 16:47:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cb5ab79da55a2393cd8505a49d53bbd SHA-1: 73c79843f8cf86c0914b2491792e77f66d87803c SHA-256: 9102a2dcccb16e3ce37816ce514897c8bc938a2e62f843de0cade1de1f5ff466
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that masquerades as a search result for 'how to make a shimeji 2020', likely to trick users into visiting a malicious site. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a phishing or trojan distribution attempt. No scripts were extracted, but the presence of an external URI and the ML/ClamAV detections strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://gimoguvi.ru/wix?keyword=how+to+make+a+shimeji+2020
    • https://tuvepovuno.weebly.com/uploads/1/3/3/9/133997374/vedinex_lorimolotu_jazupojiloluna_ritinavewanapup.pdf
    • https://cdn-cms.f-static.net/uploads/4422876/normal_600fcdae04150.pdf
    • https://static.s123-cdn-static.com/uploads/4375361/normal_5ff52b436d648.pdf
    • http://vuwimoxit.mygamesonline.org/what_does_e4_mean_on_samsung_air_conditioner.pdf
    • https://static.s123-cdn-static.com/uploads/4456377/normal_60036e949af8a.pdf
    • http://gefosezidubajoz.scienceontheweb.net/68683507998.pdf
    • http://fobativ.mywebcommunity.org/what_does_cbt_do_for_ocd.pdf
    • http://rujewazaxijaza.sportsontheweb.net/what_is_the_best_roku_model.pdf
    • https://xesapexoxes.weebly.com/uploads/1/3/4/6/134633169/957848.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zesafemumibow.myartsonline.com/cycling_cap_pattern_free.pdf
    • https://da18e6a8-d720-42de-a88c-3f13daad7efb.filesusr.com/ugd/08fe48_b0416f47f6c74b8189d70307345373b2.pdf?index=true
    • http://vewawisu.onlinewebshop.net/kenyan_passport_application_form.pdf
    • http://pusebirenox.myartsonline.com/75218287341.pdf
    • https://s3.amazonaws.com/vuforewebub/p90x_nutrition_guide_portion_approach.pdf
    • https://s3.amazonaws.com/dufekifaral/maziz.pdf
    • http://lusajafimaneru.myartsonline.com/evenflo_chase_lx.pdf
    • https://s3.amazonaws.com/midizaxopazeji/dekakezotapiwo.pdf
    • https://s3.amazonaws.com/sajatesawodiji/34628999080.pdf
    • https://3485775d-af35-4505-8fb4-f6750f575e04.filesusr.com/ugd/42f18e_aa18788d2b3f406987b790292d0d5eb2.pdf?index=true
    • https://s3.amazonaws.com/rizezobabub/88104004915.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ede1.bin
8e7b0303bb94ff49bf841e35a8b2ebcb99d38fa06e9e63a48e487a2e9adcdd32		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE1 5264 bytes
font_01_sfnt_off0000ffac.bin
95e2d1ff032379bbe409c04e915ffa4abcd77d7cdaf49372a62004fe87dbc165		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAC 3164 bytes
font_02_sfnt_off00010c7f.bin
90ceaebd40bcd2783b866303fbfd96366f43193ff0978a515821b715214afa3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C7F 10464 bytes
font_03_sfnt_off0001307a.bin
9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1307A 16036 bytes

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