Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2ef85166aefc24…

MALICIOUS

PDF

80.5 KB Created: 2021-03-16 11:09:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e17842c7b31f12e4afb997bac078699 SHA-1: dbe2f6951f0ee4f6b48b2371ac3653c925b26fe2 SHA-256: 9e2ef85166aefc24ab3f045f433799cccaf230a718c62de016fb8dc5e9ca1d0f
96 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. It contains an embedded URI pointing to 'resalured.ru', which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URLs strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/wix?keyword=howard+pittman+placebo
    • https://cdn-cms.f-static.net/uploads/4503584/normal_604ce96519132.pdf
    • https://cdn-cms.f-static.net/uploads/4409096/normal_6027183e1717c.pdf
    • https://static.s123-cdn-static.com/uploads/4413370/normal_5fefa040ad556.pdf
    • http://glossywp.online/89375428345tlsr.pdf
    • https://cdn-cms.f-static.net/uploads/4372960/normal_60418b2cb416b.pdf
    • http://ital-girl.space/gmail_app_free4gm8p.pdf
    • https://cdn-cms.f-static.net/uploads/4366014/normal_5fe9dbd5a22ab.pdf
    • http://leafester.online/carrier_split_ac_wiring_diagram67js5.pdf
    • https://static.s123-cdn-static.com/uploads/4379049/normal_5fc765d7e43a4.pdf
    • https://static.s123-cdn-static.com/uploads/4445555/normal_5febc90ce20c1.pdf
    • http://flowerport.store/bushnell_rangefinder_user_manual6ueaj.pdf
    • https://cdn-cms.f-static.net/uploads/4460071/normal_6010a0e753e94.pdf
    • http://geosen.net/rejoluxaxvb0h.pdf
    • http://normal-id.com/how_to_clean_cva_optima_v2v1qi5.pdf
    • https://cdn-cms.f-static.net/uploads/4482191/normal_60497b323d9c8.pdf
    • https://static.s123-cdn-static.com/uploads/4421615/normal_6003ad12614ca.pdf
    • http://rawenspant.online/369184677804a50t.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/regegozumekoza/balancing_chemical_equations_worksheet_advanced_level_answers.pdf
    • https://uploads.strikinglycdn.com/files/e76867fb-94bb-4558-bdb5-984f7202d9df/excel_vba_find_value_in_column_range.pdf
    • https://s3.amazonaws.com/lomuper/webunekoxazawoxolutimi.pdf
    • https://uploads.strikinglycdn.com/files/774c7ad1-f3d1-4b4f-93a6-4d049b38f4f2/nv4500_rebuild_kit_with_gears.pdf
    • https://s3.amazonaws.com/rivazixexuguri/39374258032.pdf
    • https://uploads.strikinglycdn.com/files/42a7fe5d-43f5-48fa-bbb7-25ed1acf6650/xuxiwa.pdf
    • https://s3.amazonaws.com/kavalukato/vagegeg.pdf
    • https://s3.amazonaws.com/bupaxomu/casanova_hotel_apkpure.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_off0000ffaa.bin
2d1d9e77ed97870baaa08fddaa45ab18386f7b684686d5cc5d26c28a3d6beaa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAA 5232 bytes
font_01_sfnt_off00011166.bin
526c30ac5134027ad2f5778c465dc1e285d8a9455a93174ac26f6d90a22b1554		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11166 10396 bytes

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