Malicious PDF — malware analysis report

Static analysis result for SHA-256 17c292ae38a46eea…

MALICIOUS

PDF

125.8 KB Created: 2021-03-23 08:59:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8f28a9448e717117a11f055e01ca2cb0 SHA-1: c20284e10d3a0ae595208e95758cab9081fb21f5 SHA-256: 17c292ae38a46eea88019f283a411c70cda669ece81d621caea38e662b2347c7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jumiwimov.ru/wix?keyword=karthigai+deepam+serial+wiki PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388279/normal_600a84a954562.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/sPgiLjb/9683498561.pdfIn PDF document text
    • https://xazefobilizap.weebly.com/uploads/1/3/1/3/131384081/8235972.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450151/normal_603e513414d36.pdfIn PDF document text
    • https://maraliva.weebly.com/uploads/1/3/2/7/132712127/renoveduve-vogoparuxufexub-zanejubobetixov.pdfIn PDF document text
    • https://sifejolo.weebly.com/uploads/1/3/1/4/131410009/totav.pdfIn PDF document text
    • https://cdn.sqhk.co/xidafigutoxa/BN1ejiG/airport_controller_requirements.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478132/normal_60478e4014c5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375358/normal_5fcaad7783e75.pdfIn PDF document text
    • https://jerolukemotib.weebly.com/uploads/1/3/0/8/130874115/5572e5a.pdfIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/b97f83d4-04f1-4dd5-9739-c45df1f3ca26/lezudetewodedefegi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60d125e8-6279-4c02-8af3-309a43837e1f/what_is_phantom_of_the_opera_really_about.pdfIn PDF document text
    • http://sedobuxekazadi.rf.gd/tableau_activation_key_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/22346902346.pdfIn PDF document text
    • http://vukirulavobos.epizy.com/formation_cisco_ccna_1_2_3_4.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/96314336382.pdfIn PDF document text
    • http://kexeban.rf.gd/toy_story_2_english_movie.pdfIn PDF document text
    • http://kivudul.rf.gd/wikazixu.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/74807401752.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/djihadiste_francais_reportage.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://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00013f4b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13F4B 9048 bytes
SHA-256: 4aa90021003fd0c184c952e3f5a975ba94090ede08e0119c48f514ab261af5d8
font_00_sfnt_off00011f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F8C 5496 bytes
SHA-256: c945f308a74210802f8e2d1d9f58431b2438c11e01e33c874c3c754355a8a786
font_01_sfnt_off00013220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13220 3852 bytes
SHA-256: f0cde3ffff827f3d7de02beee460404e02f9158f3f6686cb592b032a4589caf8
font_03_sfnt_off00015e13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E13 2960 bytes
SHA-256: 6cf3c43d24576ebd0e79aa4fcd582f7f9903e8ec992bd1a5fdb1954620ffdb35
font_04_sfnt_off00016a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A8B 31708 bytes
SHA-256: 72c39002947637878702552d4fe59b8f2f22eb992c660b7c3d36a2c4f152c14f
font_05_sfnt_off0001adcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ADCC 10752 bytes
SHA-256: 104c818e7ca45959aa6fe6157ea5d6c461e62bbfc09cd1a5dd80fcccc5ff4cb2
font_06_sfnt_off0001d302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D302 5936 bytes
SHA-256: c4dbec21ec46494e77591ebf47e736d94f0966d1bd09dbc920e471f3aecaa19b