Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f1f7d6d94260eb…

MALICIOUS

PDF

320.4 KB Created: 2021-04-13 14:54:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: f6990c35b785650ac9a1d0ffb9b81c15 SHA-1: ef848061dfff69f3d1c69193afc78e717d05cb11 SHA-256: 69f1f7d6d94260ebf082feb49f8be86ca55188b65568fdab850e64f26891c061
156 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document attempts to solicit sensitive information like recovery phrases or private keys. An external URI points to a URL that appears to be a lure for a free PDF download, likely leading to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9590

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://golowaki.ru/strik?utm_term=learn+amazon+web+services+in+a+month+of+lunches+pdf+download+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4378604/normal_5fcac1287086b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391013/normal_6052398463101.pdfIn PDF document text
    • http://dosefokinuvulo.mypressonline.com/56913655577.pdfIn PDF document text
    • http://zeruxejobimal.mywebcommunity.org/52753109542.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450634/normal_6042e0a09a04f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409798/normal_603baa06f31f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415951/normal_603e915bbe842.pdfIn PDF document text
    • http://gugibugud.mygamesonline.org/najuwexogosulogusazumawo.pdfIn PDF document text
    • http://lestyprin.online/31065172564bqvwt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415077/normal_603d21e0719d4.pdfIn PDF document text
    • http://tomogorman.com/linarobogotejir8y0p.pdfIn PDF document text
    • http://rabota-plus.club/kenmore_ultra_fabric_care_80_series_washer_capacitymp2cr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0481823e-1b9c-4512-830b-f6b3d3346223/how_much_does_it_cost_for_a_psychological_evaluation.pdfIn PDF document text
    • https://f0d491a7-7d72-4eea-bbd3-72ad31f48a9a.filesusr.com/ugd/1acdab_a97bc6601efc40ffb367450311a49af7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/83b53557-a876-46ac-a818-468995f3a8a3/pretty_little_liars_first_episode_free.pdfIn PDF document text
    • http://bemabam.myartsonline.com/nuzomuzekagefeki.pdfIn PDF document text
    • https://200c4c3d-185b-4246-b99f-f40cd7065c99.filesusr.com/ugd/3ed902_be89a7fd1af247ae87cdde18666eab5d.pdf?index=trueIn PDF document text
    • https://5fb42ee6-a9be-400a-98f2-f9d4b9f720c8.filesusr.com/ugd/1813b3_d32ad05ea5214888a18d4976b50bd139.pdf?index=trueIn PDF document text
    • http://sofibimibojas.myartsonline.com/89695332117.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00046d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46D84 6476 bytes
SHA-256: 526c5a2175551476bef9e67e23fc16d118bda5f5d89964818a68e3a853678add
font_01_sfnt_off00047d8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47D8B 5680 bytes
SHA-256: ebfa890d04132b87cff803d2990af879d10d24f1af3bddd761fb657d1fc6900b
font_02_sfnt_off000490ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x490CA 9692 bytes
SHA-256: 368e239636be97c65955d462eeac46e34946056cb893e17cb14b86729ff79268
font_03_sfnt_off0004aeb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AEB2 12712 bytes
SHA-256: 140b8153a4e66711aa99a5110d8644034f84d0a71080d62a148e946cf40deef3
font_04_sfnt_off0004da1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DA1A 16156 bytes
SHA-256: 7e4089c776135d7ae4483252cb2c76ea95292790bb2fa289b122a68fcc080d00

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