Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bcaf8a2870c8b69…

MALICIOUS

PDF

78.5 KB Created: 2021-05-29 08:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a31014d90d63c648a374c45ff27dc00b SHA-1: e066e8ce48b1d163712084932798c76118976bfb SHA-256: 2bcaf8a2870c8b69a1e6dc47141eb3b96b95e92f1ca152f39eea59672e1d0b77
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many pointing to potentially malicious domains, suggesting a link farm or phishing campaign. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dugedepap.ru/strik?utm_term=waifu+academy+apkpure
    • https://peketavapi.weebly.com/uploads/1/3/4/3/134331612/kibixelarelekipaxup.pdf
    • https://mumotajesok.weebly.com/uploads/1/3/0/7/130738730/253de.pdf
    • https://medimigo.weebly.com/uploads/1/3/4/8/134864966/negajaputaxupux.pdf
    • https://cdn-cms.f-static.net/uploads/4381105/normal_6033a0b62ba7d.pdf
    • https://wigowaziralo.weebly.com/uploads/1/3/4/4/134498628/86278fef1ee.pdf
    • https://sagojuxejuzogug.weebly.com/uploads/1/3/4/5/134598596/fapebotumulef.pdf
    • https://vovowiki.weebly.com/uploads/1/3/2/3/132303124/wenuli.pdf
    • https://cdn-cms.f-static.net/uploads/4453326/normal_60184b5e4ac44.pdf
    • https://kedefakoriwo.weebly.com/uploads/1/3/1/1/131164231/foxefilipanudunumup.pdf
    • https://nariwezug.weebly.com/uploads/1/3/1/4/131482968/308830.pdf
    • https://cdn-cms.f-static.net/uploads/4464330/normal_606231e1ec39f.pdf
    • https://piladokad.weebly.com/uploads/1/3/4/7/134759874/gezamogami.pdf
    • https://rinefoza.weebly.com/uploads/1/3/4/8/134883618/novidi.pdf
    • https://domekemukud.weebly.com/uploads/1/3/5/3/135327345/pufojizosiguto_bomuf_xazelaru_xepad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/1c523606-97ea-4422-b3fe-b4f4dd660345/what_was_the_significance_of_the_gospel_of_wealth.pdf
    • https://uploads.strikinglycdn.com/files/ec381e32-8c60-41db-af1c-ce3e087d300e/25184981644.pdf
    • https://uploads.strikinglycdn.com/files/e9ddf36d-42f4-48c6-b231-99df7c931d5b/39122795174.pdf
    • https://uploads.strikinglycdn.com/files/20bde58a-5eea-4064-9c06-127f7f702f6e/allegedly_book_online_free.pdf
    • https://uploads.strikinglycdn.com/files/08da74a1-cde1-4bdc-b904-af33fca9c2e1/hp_officejet_pro_x476dw_mfp_change_ink.pdf
    • https://uploads.strikinglycdn.com/files/5afc5162-2e83-48bc-a523-d62f75281b17/polaroid_sx_70_600_film.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_off0000d6b1.bin
8c74347d636d8cf856d201e5e6eb29e176ae3f80fe60077a6455c7fdcae79fb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B1 5268 bytes
font_01_sfnt_off0000e8a1.bin
ab7952e30a868751faa025f2e14b53a51e83c417853e71d0ae878d8a5e8faa15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A1 1852 bytes
font_02_sfnt_off0000f17a.bin
094db3f6a96464fae9c09b67aba1b022a79bc775c8b7481af77f723d20219ee3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF17A 10992 bytes
font_03_sfnt_off00011779.bin
c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11779 16092 bytes

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