Malicious PDF — malware analysis report

Static analysis result for SHA-256 daf57cc9644cc094…

MALICIOUS

PDF

104.5 KB Created: 2021-03-27 23:43:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 3abd66dfe1dcfe1f40f2c5dc822a5540 SHA-1: 0f5f5fd1396a962cccb622b5bb844d66e4ded1ff SHA-256: daf57cc9644cc0948c8282a080d1dbb3e97cbb73a4dd6418e431d9b05c4126b2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, including one pointing to 'mezovuduw.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'allwood eagle point wall insulation package', indicating a social engineering attempt to direct the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://mezovuduw.ru/wix?keyword=allwood+eagle+point+wall+insulation+package PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4427274/normal_5fcdea8bbe176.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426942/normal_604f7edfbbcad.pdfIn PDF document text
    • http://myyshooop224.site/built_with_science_upper_body1lsq3.pdfIn PDF document text
    • http://thrivewebs.com/free_marching_snare_drum_sheet_music306tf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403808/normal_5fcd56b759add.pdfIn PDF document text
    • http://onlineeshop24.xyz/jitubedofemim56st.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425511/normal_601f4111c0f17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_603b2eada0c78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369165/normal_5fce981f1377e.pdfIn PDF document text
    • http://lnstagram-verifedbadge.com/xulegazilitofabivoxatef5u298.pdfIn PDF document text
    • http://idealslimitalia-oficial.site/saipa_2020_exam_datesmgscm.pdfIn PDF document text
    • https://tulivugid.weebly.com/uploads/1/3/4/6/134607321/51f7f9db9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449402/normal_603219bb706f9.pdfIn PDF document text
    • https://numevajuga.weebly.com/uploads/1/3/0/9/130969633/5044a7cf49b7.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://uploads.strikinglycdn.com/files/ed8f5d2b-3ca6-4163-8dde-15002ff2f4e7/97020418371.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f19975bb-580a-425a-9cb9-9045b2ba5347/94337019486.pdfIn PDF document text
    • http://xivoxek.epizy.com/75261020186.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1af1dd66-f5c4-4591-bccb-69295570bc46/philips_norelco_aquatec_head_replacement.pdfIn PDF document text
    • http://mepuzoxol.rf.gd/haar_cascade_classifier_xml.pdfIn PDF document text
    • http://vudujufilax.epizy.com/fallout_4_ps4_trophy_guide_and_roadmap.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014a3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A3A 5172 bytes
SHA-256: 6b5153c744839e10812051b538b13ea2f2cdb2707be38cc4d4953c85806622d0
font_01_sfnt_off00015bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15BFA 12500 bytes
SHA-256: 881e0a9c977cf6545fd405e2dc401ba18e4851935bb289eb37a809487735544a
font_02_sfnt_off000185da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x185DA 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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