Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f78a6db39ba18c…

MALICIOUS

PDF

79.9 KB Created: 2021-04-03 14:00:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e50d42d0497bc944988ce446a7f1419 SHA-1: b71686aaf1c849b259a4a7ffd066f469280e3b51 SHA-256: f2f78a6db39ba18c7c1a7e416784a0ee30ad06b9bf4e3031d9b9e4b633c3ff39
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for phishing or distributing malware. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of links, suggesting an attempt to create a link farm for SEO manipulation or to host malicious content. The presence of a link to 'flick launcher pro full crack download for apk' strongly suggests a lure for pirated software, which is often a vector for malware. The ClamAV detection and ML classifier further confirm its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://bologen.ru/wix?keyword=flick+launcher+pro+full+crack+download+for+apk
    • http://vinnipoh.fun/1783200573sobur.pdf
    • https://static.s123-cdn-static.com/uploads/4388037/normal_5ff8f90621968.pdf
    • http://flathead.us/67001379805q2m3p.pdf
    • https://peletawipimo.weebly.com/uploads/1/3/4/4/134444154/karebemokag.pdf
    • http://porn77.design/gowiwivs1w2r.pdf
    • https://polopomix.weebly.com/uploads/1/3/4/8/134849819/vodowotimawibaf-peboludek-sujip-lalemikewodage.pdf
    • http://topuniversityru.fun/455254601386dbi1.pdf
    • http://milky-rp.space/hallelujah_jeff_buckley_sheet_musicvjwd8.pdf
    • https://rujuzodojavumip.weebly.com/uploads/1/3/4/7/134726220/6823245.pdf
    • https://jipunone.weebly.com/uploads/1/3/5/3/135349916/tugejupixunok_kugunidowu_bedosupuzapepam_nimosaluge.pdf
    • http://sosed.market/68187136356wr59z.pdf
    • https://cdn-cms.f-static.net/uploads/4413005/normal_60595180a701e.pdf
    • https://tajekuludukomas.weebly.com/uploads/1/3/4/4/134498487/jegawaz_fezemedawun.pdf
    • https://static.s123-cdn-static.com/uploads/4449605/normal_5fc76412597cb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pisik/wesodekofob.pdf
    • https://3f3b26af-a357-4ab7-b723-baa2d0f6bb2b.filesusr.com/ugd/5d6e2e_c6e72a07cbac4a778a3a4b390c32e143.pdf?index=true
    • https://627f215e-41ba-4aa4-9906-5f9f9d117739.filesusr.com/ugd/8ab72e_1081852e93514efe9f849000961edf80.pdf?index=true
    • https://s3.amazonaws.com/murudute/baasha_hd_movie_free.pdf
    • https://s3.amazonaws.com/gotitibekovi/91924391291.pdf
    • https://c4a0f302-b060-43a0-af10-a0364da5eca7.filesusr.com/ugd/c6d327_c18c6ea8c5a04a2ab60a6ce6284b1101.pdf?index=true
    • https://6ba7316d-b84b-4ccb-a32a-103c856d4013.filesusr.com/ugd/91f37e_76dfc93e114646faa1fa1be6c989dea2.pdf?index=true
    • https://34ec465e-51aa-4dba-9a8c-c05fcfb5ae84.filesusr.com/ugd/df15ee_8a77d57977ce4704baf20b858adda930.pdf?index=true
    • https://s3.amazonaws.com/nonipesikiri/apache_cordova_visual_studio_tutorial.pdf
    • https://s3.amazonaws.com/pesetufavo/home_design_3d_full_crack.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f679.bin
8395a8a2990ceec91b5cda6d79de5735b4432b2e270aa190c0fe153e20e199be		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF679 5176 bytes
font_01_sfnt_off0001082b.bin
9e1bee88c63097024c17de5c1a41ac4827daa64d7f7800542da854d6ce64d190		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1082B 12216 bytes

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