Malicious PDF — malware analysis report

Static analysis result for SHA-256 2869ce4846f7a98c…

MALICIOUS

PDF

80.9 KB Created: 2021-04-07 10:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 271afdd49b671da96e40319396b75d93 SHA-1: 7a21c7868571c661bc749e21831750131fdc38c8 SHA-256: 2869ce4846f7a98cbfc99f130ee6edd7936820322088338b7c370d346f5ee0ed
96 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 an embedded URI pointing to 'bologen.ru', which is likely the malicious destination. The document body, though heavily obfuscated, contains text related to 'black diamond headlamp turn on' and authoring information, suggesting a lure to disguise the malicious intent. No scripts were extracted, but the presence of an external URI and the overall detection profile strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • 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/strik?utm_term=black+diamond+headlamp+turn+on PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482191/normal_602063b58d9f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427103/normal_5ffd281da0b44.pdfIn PDF document text
    • http://afracheat9.xyz/how_to_finance_a_metal_building_home8kvqb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493550/normal_6021e8268690f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446390/normal_5fd9e8632a655.pdfIn PDF document text
    • http://fb-ig-violation.com/i_e_irodov_problems_in_general_physics_solutionsp8smx.pdfIn PDF document text
    • http://lakshmi-store.ru/guvewujukrqzl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472200/normal_5fedf63e979dc.pdfIn PDF document text
    • http://mon-cmb.best/final_fantasy_viii_switch8vbdg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375518/normal_5fdec2beb726d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/baxunaf/iron_kingdoms_character_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/93105371269.pdfIn PDF document text
    • http://ponaduzatofu.rf.gd/braille_alphabet_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/32033240729.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/serta_icomfort_bed_warranty.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/assistant_font_family.pdfIn PDF document text
    • http://modimuvamut.epizy.com/calories_in_el_pollo_loco_chicken_breast_with_skin.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/present_tense_words_list.pdfIn PDF document text
    • http://sofikej.rf.gd/concrete_masonry_units_size_and_shape_guide.pdfIn PDF document text
    • http://pesipobigon.rf.gd/how_to_learn_dutch_faster.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/posterior_capsule_opacification.pdfIn PDF document text
    • http://batuzotunar.rf.gd/skitarii_codex.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/jesefinomefenuxisezoba.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/honeywell_th5220d1003_non-_programmable_digital_thermostat_manual.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA0 5248 bytes
SHA-256: 51ad8485ee292b666007bdc44538f8d3a7a6c47c2571559fd6a970c3b6833392
font_01_sfnt_off0001104e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1104E 10972 bytes
SHA-256: b2b2d5ca93128e5d4cf8eede3d15013612357e480443c99fe75da27fe011e33b

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