Malicious PDF — malware analysis report

Static analysis result for SHA-256 19d9fa14e458afc3…

MALICIOUS

PDF

75.4 KB Created: 2021-03-29 01:35:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8779f332bfddefc67f8279252dfe298 SHA-1: 5169838ccebc76480df310e9091cf2f92cec838b SHA-256: 19d9fa14e458afc3a4f3590d807c0a1ce694c2a4fcbcf60fa973773cffd2facd
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a manual, likely to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://mezovuduw.ru/aws?utm_term=dyna+glo+rmc+55r7+manual
    • http://belplitka.ru/62209244483zm8pj.pdf
    • http://fruit-citrus.space/simplehuman_mirror_not_turning_ona2jk3.pdf
    • https://cdn.sqhk.co/gadewekunel/jh6ih5Y/viwezozotuwisotamubo.pdf
    • http://dapajurop.mygamesonline.org/washington_football_schedule_2020.pdf
    • http://confirmyourverifiedbadge.com/how_to_write_an_ebook_for_amazonzyg37.pdf
    • http://gofadivus.mygamesonline.org/62833743853.pdf
    • http://burrrhey.tech/tumikiperamao03jk.pdf
    • http://canonsburglake.com/what_do_they_always_say_in_handmaids_talemycpq.pdf
    • http://biotringel.shop/sezozuzadezufanavitvds2p.pdf
    • http://gepokupaburorew.mywebcommunity.org/kopipubuxez.pdf
    • http://fruct.space/tiwekomezot20ejw.pdf
    • https://cdn.sqhk.co/jabakujivim/fgfjjhf/39722615292.pdf
    • http://trokot-new.online/nulakegowuxurape99rlc.pdf
    • http://mifvideo.space/azure_resource_manager_cloudformationip2lu.pdf
    • http://gatorama.site/78394359175beex6.pdf
    • http://polikarmonolit.ru/77188362124xm1fv.pdf
    • https://cdn.sqhk.co/gerezowuves/eBREhip/contract_template_for_payment.pdf
    • http://erogancolumbia.site/korobuluruvorjp67d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://dawifugoxumevej.rf.gd/asteroids_comets_and_meteors.pdf
    • http://namopidud.epizy.com/telecharger_cours_atomistique.pdf
    • http://muzokezebo.rf.gd/how_to_fill_air_innovations_humidifier.pdf
    • http://juwukopegonamu.onlinewebshop.net/98640645303.pdf
    • http://vikenigekewojo.epizy.com/12.3_dna_replication_worksheet_answer_key.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dba1.bin
39700e950d119eea5d6db3002d71f358a1379f3be3c51292aa0dcef0d4ac7459		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA1 4880 bytes
font_01_sfnt_off0000ec2a.bin
fc563b9851d9d2c4d4d66cdb3df860e6d80e74cab84210cba79e10d3c11dcd89		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2A 11260 bytes
font_02_sfnt_off00011202.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11202 4324 bytes

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