Malicious PDF — malware analysis report

Static analysis result for SHA-256 d11f893825b1f3b4…

MALICIOUS

PDF

107.7 KB Created: 2021-03-09 01:25:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2746f1e8b5d0ca407641d4776ca7f72d SHA-1: 27f01e9583789f010e86e8111621648973d410ec SHA-256: d11f893825b1f3b4584cae2f2a67fd9548f7fa9182d1bbff2bf51596fc31d725
126 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. Numerous embedded URLs, including one on disposable hosting with UTM parameters, suggest a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains references to 'wapking bollywood movie 2017' and wkhtmltopdf, potentially serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/123?utm_term=wapking+bollywood+movie++2017
    • http://gekifek.scienceontheweb.net/gumetaxinabawidiz.pdf
    • http://rigudozefogo.mypressonline.com/what_do_the_symbols_on_a_dashboard_mean.pdf
    • https://tonavamajarow.weebly.com/uploads/1/3/4/6/134694337/5b7dc6e01b27c.pdf
    • http://kafalukuwemi.mygamesonline.org/korg_sv-1_review.pdf
    • https://vowegokemawo.weebly.com/uploads/1/3/4/3/134353822/8177154.pdf
    • https://static.s123-cdn-static.com/uploads/4420903/normal_5ffcf3f6f19da.pdf
    • http://zanovekolasin.mywebcommunity.org/nazm_hikmet_iiri_en_gzel_deniz.pdf
    • https://vizedaxitexoter.weebly.com/uploads/1/3/4/7/134740617/3687818.pdf
    • https://cdn-cms.f-static.net/uploads/4427821/normal_601da260c8180.pdf
    • https://cdn-cms.f-static.net/uploads/4379387/normal_60367e137e79f.pdf
    • https://vegilirebaj.weebly.com/uploads/1/3/1/0/131070576/sidogodi.pdf
    • https://static.s123-cdn-static.com/uploads/4527042/normal_5fdd42f4bf048.pdf
    • http://jadogaxarabu.mygamesonline.org/christopher_hitchens_vanity_fair.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lumaradidufil.epizy.com/79504838344.pdf
    • https://s3.amazonaws.com/tizowodifi/jigesonibukaf.pdf
    • https://s3.amazonaws.com/toguvaju/xujeniw.pdf
    • https://58552d80-c20c-4e4f-99b9-91bedbcc07a3.filesusr.com/ugd/c18496_ca32ddc1147547058244ddf5dcafded5.pdf?index=true
    • https://e9b66cc5-9289-431c-8f17-6739e1cd2d88.filesusr.com/ugd/c8f33b_9e54992afe7844039c7070cce22bfbcc.pdf?index=true
    • http://dipibezepipes.rf.gd/what_size_battery_does_weight_watchers_scale_take.pdf
    • https://s3.amazonaws.com/wuxupewu/how_is_class_c_airspace_depicted_on_a_sectional_chart.pdf
    • http://gavokalofo.epizy.com/18107560846.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000150b9.bin
1e7e00ff6c3cca3385102ec59811268372455029b846f33f19b6ab09a32470d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x150B9 5880 bytes
font_01_sfnt_off000164e2.bin
92178b299230debfedc63b0e1eee5f4f298a80fbdeb03950478e6a5648427739		 pdf-font-stream PDF embedded font (sfnt) at offset 0x164E2 11520 bytes
font_02_sfnt_off00018ba0.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18BA0 16164 bytes

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