Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3d231a9384307a6…

MALICIOUS

PDF

76.1 KB Created: 2021-03-13 15:30:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fcf26e9ae1ba4dd3f4d1600efb0ddc54 SHA-1: 9d299325bc60608300f752d6c8751bc61ab32094 SHA-256: f3d231a9384307a6a4a553a8965e2ff2a2f7b39f90028cdc21dda1d2c48fb80c
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://maypoin.ru/wix?keyword=alka+tone+keto+diet', which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, suggests a lure related to diet plans, aligning with the external URL's keyword.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wix?keyword=alka+tone+keto+diet
    • http://alisabor.design/6398100952kjwid.pdf
    • http://idealica-uficialeitalia.website/flat_pack_home_kits_uknwint.pdf
    • https://cdn-cms.f-static.net/uploads/4411701/normal_601a87955d398.pdf
    • https://static.s123-cdn-static.com/uploads/4471092/normal_5fdfbfb76a228.pdf
    • http://supsun-aero.com/free_assured_tenancy_agreement_forma46nm.pdf
    • http://trokot-tonirovka.online/708691692117qrmo.pdf
    • http://usmileofficial.site/blood_money_lyrics_lil_darkie33dgu.pdf
    • https://beluloxepivizor.weebly.com/uploads/1/3/4/1/134131295/nigasumuv-tesajabilar-pizovutoliw-febezuzekigij.pdf
    • http://mavpa.fun/what_age_is_coraline_suitable_forrcdzp.pdf
    • https://cdn.sqhk.co/bigokukanuf/ZWibpjf/recharge_a_cuba_por_ding.pdf
    • http://ig-copyrightnotice.com/oppo_bdp-103_region_free_kitocwva.pdf
    • https://dumisoxi.weebly.com/uploads/1/3/4/6/134625223/xedidawisuz_miwaguralure.pdf
    • https://cdn-cms.f-static.net/uploads/4467032/normal_600a869406991.pdf
    • https://bulasekujamur.weebly.com/uploads/1/3/4/3/134377464/fazolawamalapirilek.pdf
    • https://cdn.sqhk.co/rirelolut/ue40jf7/corona_beer_price_6_pack_cans.pdf
    • http://fortuneocredit.com/refilosigejowovugubiximik43lq.pdf
    • http://dreamingdeveloper.com/what_is_my_ip_address_gateway_and_subnet_maskdd8md.pdf
    • http://useporte.xyz/what_is_the_newest_call_of_duty_game_for_ps4xzler.pdf
    • http://tertov.xyz/medicine_dictionary_hindi_downloado6zpx.pdf
    • http://leafester.online/when_can_you_plant_tomatoes_in_south_floridajrr1g.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000eee9.bin
34dea4c2313d4b5ee78337cf69796f15a72e4109753c4219efccb6aabc22c5b5
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE9 4600 bytes
font_01_sfnt_off0000fea2.bin
4b70530b760d9fc68e76f9d7d5567623d23612cb860172019053ce74bad4484e
pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA2 10828 bytes