Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cfed148322b7388…

MALICIOUS

PDF

81.3 KB Created: 2021-03-14 18:14:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 176355491387c072eafd307a4e535baa SHA-1: 9db2bfbdfbb37087841836e2dded34854781ccd6 SHA-256: 7cfed148322b73886d348fb6311d97f52cd294116ac87fde8533404a9de9b619
96 Risk Score

Malware Insights

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

The file is a PDF containing embedded URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of multiple suspicious URLs suggests a broad campaign targeting users with deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/123?utm_term=adolescence+medley++sub+indo
    • http://potenciy.xyz/plantronics_headset_m70_pairingnxkoh.pdf
    • http://wijutomotagam.mypressonline.com/lewilunolijusosonow.pdf
    • http://suwetobolubujub.getenjoyment.net/86936425046.pdf
    • https://cdn-cms.f-static.net/uploads/4366646/normal_5fd6810eeb82d.pdf
    • http://siwupojotuj.getenjoyment.net/17720606546.pdf
    • http://najisemure.medianewsonline.com/vagitakugasafe.pdf
    • https://cdn-cms.f-static.net/uploads/4452377/normal_60130af4952d9.pdf
    • http://fapseo.ru/command_prompt_commands_windows_10_cheat_sheetwfs7u.pdf
    • http://letxxnx.org/fisher_price_cradle_n_swing_motor_noisej5aa5.pdf
    • http://docita.fun/what_is_average_household_income_in_russiaj4rxa.pdf
    • https://cdn-cms.f-static.net/uploads/4393363/normal_60330ec41fe38.pdf
    • http://radanews.site/modal_verb_can_in_spanishp57bw.pdf
    • http://connexion-amelii.xyz/enthalpy_of_reaction_problems_with_answerss4i8b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/dca61850-6c5c-4084-bc27-89896f5c3833/3199722897.pdf
    • https://s3.amazonaws.com/vavabi/19661465250.pdf
    • https://s3.amazonaws.com/fuwawibu/java_1._8._0_121_for_mac.pdf
    • http://tifilow.onlinewebshop.net/how_to_write_a_self_review_examples.pdf
    • https://uploads.strikinglycdn.com/files/2ebf0526-ca18-4b8b-a5cb-c87bbb8eb31e/sherlock_holmes_malayalam_books_online.pdf
    • https://s3.amazonaws.com/lomuper/isobutyl_chloroformate_reaction_with_carboxylic_acid.pdf
    • https://s3.amazonaws.com/bejokazemur/how_to_make_chicken_nuggets_crispy_in_air_fryer.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_off0000dd09.bin
346e34f2b6a956804e99bea9316c19b101b920975551350a7ec25112c3ab9ce2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD09 4812 bytes
font_01_sfnt_off0000ed45.bin
1562819e197b619d156d330613395079a20f91367760005c44a1eeb7d283fee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED45 10792 bytes
font_02_sfnt_off0001128f.bin
ee51351c9eb8c6a9dbff1bb743467f39bbaa64eee970481c040e8f02c1ffc4b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1128F 16340 bytes
font_03_sfnt_off00012807.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12807 4324 bytes

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