Malicious PDF — malware analysis report

Static analysis result for SHA-256 33a01a59d6bc092e…

MALICIOUS

PDF

174.0 KB Created: 2021-04-13 02:28:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 22a7aee2609b045d5c801e5c08f981b7 SHA-1: ece6671dd00e029054d7c01fa8578969d4f74ba7 SHA-256: 33a01a59d6bc092e5f29549d1937fc652a413b584665d5cc6b0e3de442f86886
134 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded URLs pointing to suspicious domains, including 'fokemale.ru' and 'faceit.su', which are likely used to host malicious content or redirect users to phishing sites. The document body, though heavily obfuscated, suggests a lure related to 'Les miserables musical characters' to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://fokemale.ru/strik?utm_term=les+miserables+musical+characters PDF link annotation
    • http://faceit.su/pobopisujufigokamufeluz175nr.pdfIn PDF document text
    • https://finedogu.weebly.com/uploads/1/3/4/7/134749629/metefasagikok-nevodaxa-nilaxojuj.pdfIn PDF document text
    • https://kapumalozaz.weebly.com/uploads/1/3/4/8/134892255/9794727.pdfIn PDF document text
    • http://roman-holidays.shop/bemalah9dzx.pdfIn PDF document text
    • https://jarurozo.weebly.com/uploads/1/3/5/3/135320013/9943f66aa584c83.pdfIn PDF document text
    • https://xesisawizes.weebly.com/uploads/1/3/1/6/131606125/madafuzefifix_paruz_zibadudobesotow.pdfIn PDF document text
    • http://vashastrahovka24.ru/how_to_export_strava_route_to_garminv00iw.pdfIn PDF document text
    • http://shopbest.online/five_examples_of_similet42m5.pdfIn PDF document text
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/39d8ae79aca046.pdfIn PDF document text
    • https://lirikilufowu.weebly.com/uploads/1/3/1/0/131070293/ziduvotelos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cc0b58a5-7bf4-4b41-9cd7-d9bc0cd2cc6f.filesusr.com/ugd/6dc98b_02442b38e7d04bf287edb3b664ef3b02.pdf?index=trueIn PDF document text
    • https://6e37e838-c278-4d46-baa9-25b8497af200.filesusr.com/ugd/fbcb80_8e7c3c2d73474b43802c0c43abf9c50a.pdf?index=trueIn PDF document text
    • http://dizodufuxot.rf.gd/codecademy_python.pdfIn PDF document text
    • http://tomoxiguzuzi.epizy.com/lettering_abecedario_plantillas.pdfIn PDF document text
    • https://dd39d194-9042-494f-90ab-223c96cf8da5.filesusr.com/ugd/5d3909_92d4e2d01cd5432d9fe9ff71b13ac659.pdf?index=trueIn PDF document text
    • https://8319d365-0190-44ee-b2f3-e76f6fd230eb.filesusr.com/ugd/112488_8e44f5a9982f4b1db89e73faa5669463.pdf?index=trueIn PDF document text
    • https://2df275fc-a8dd-466e-be95-33fe0afe7bed.filesusr.com/ugd/9b6d1e_9f83c05ebc83476787e2a2f4719ef83c.pdf?index=trueIn PDF document text
    • http://zunerewema.epizy.com/zisaso.pdfIn PDF document text
    • https://2c91b947-1dd8-401e-ae91-d595f2f75867.filesusr.com/ugd/0af078_da5b8408eb074cc48be5e7ee0f184ad7.pdf?index=trueIn PDF document text
    • https://27420876-d215-4860-9a72-f48db0d0c320.filesusr.com/ugd/4062c2_4deff21a4f7b46d09ab3536bba02916b.pdf?index=trueIn PDF document text
    • https://8bd0dbf5-62e0-4684-a95a-1d9666dfa34a.filesusr.com/ugd/e71694_eb03e18f5b614f74987526d6aeeeac3e.pdf?index=trueIn PDF document text
    • http://xupikilagi.rf.gd/christian_movies_2017_free.pdfIn PDF document text
    • http://wokoxut.epizy.com/puxugilanilanajome.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
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24552 4784 bytes
SHA-256: 34928a3d8f4fa92cf0009f67f34b95e87b43390827ef19a6472bf57330252a84
font_01_sfnt_off0002558e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2558E 14944 bytes
SHA-256: e3a6863d72e66483102dd58ddd87188b9ac427e9b81752f3f4e04b1a5b8faa45
font_02_sfnt_off000283e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x283E2 16292 bytes
SHA-256: bebdae4f72cee612b1595ede016db5bd0d111515040e9f0eaeddc625df1d0941
font_03_sfnt_off0002998b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2998B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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