Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae35fa310fa0943…

MALICIOUS

PDF

92.8 KB Created: 2021-03-21 08:46:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 39094043c2f8d707059948de5ec522c9 SHA-1: 16d177b0672a64b57e381ac2b178e167bbff2157 SHA-256: 7ae35fa310fa0943e8970cbf344f713becf7643f6eb0ac8d27809dc593ffac01
156 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, suggesting a link farm or phishing attempt. The embedded URLs point to domains that are likely used to host malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://botokaw.ru/wix?keyword=apkpure+minecraft+pc
    • https://cdn-cms.f-static.net/uploads/4416671/normal_600b3e799fc3f.pdf
    • https://cdn-cms.f-static.net/uploads/4459776/normal_6011651aca57c.pdf
    • https://static.s123-cdn-static.com/uploads/4393016/normal_5fc82919edaba.pdf
    • https://static.s123-cdn-static.com/uploads/4365608/normal_5fde445526636.pdf
    • http://mizigigutafax.iblogger.org/combat_sambo_techniques.pdf
    • https://cdn-cms.f-static.net/uploads/4527357/normal_5fdb39921ea04.pdf
    • https://cdn-cms.f-static.net/uploads/4409250/normal_605609d68de5f.pdf
    • https://cdn-cms.f-static.net/uploads/4366653/normal_60273c54065db.pdf
    • https://cdn-cms.f-static.net/uploads/4484380/normal_604db0c3aa219.pdf
    • https://static.s123-cdn-static.com/uploads/4383582/normal_60039200219f0.pdf
    • https://cdn-cms.f-static.net/uploads/4413850/normal_601457723f04f.pdf
    • http://nigoguno.scienceontheweb.net/english_to_french_translation_dictionary.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mufigodukusa.epizy.com/108775757.pdf
    • https://e8b83640-91e4-44a0-a69f-c2468797902f.filesusr.com/ugd/ee4a13_e1af71c7b2204c3a9590e7bb552b0568.pdf?index=true
    • https://0d3c4653-ec4b-4b04-9c20-59e348ba858e.filesusr.com/ugd/62200f_f5b932c559a54f8dba0bdb57e8ba7c1c.pdf?index=true
    • http://zetijub.epizy.com/reporter_live_bhandara.pdf
    • http://tejogasev.rf.gd/refobekipubovolojil.pdf
    • https://af18ad75-7652-4b25-b9e0-8da5fded0af1.filesusr.com/ugd/529385_0456f996483b43b1b924f43823a6c216.pdf?index=true
    • http://kixavukuwowaz.rf.gd/75945079607.pdf
    • http://sajoveguduv.onlinewebshop.net/tutorial_ms_office.pdf
    • https://bf130ee1-1463-4c69-9604-1b23772ced92.filesusr.com/ugd/b4609a_bb4f0f1a91a44deb8305a4043a6b42d1.pdf?index=true
    • 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_off00012ed0.bin
b7cc86055c3f208025a1958b143e804d53507d134d37c0cd6d89b2add4a7e7d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12ED0 5004 bytes
font_01_sfnt_off00013fc8.bin
62e87edbcf814551b43e3d31580ca452dd0e03da94beb317e561aa28cd98fc4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13FC8 11352 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.