Malicious PDF — malware analysis report

Static analysis result for SHA-256 e756cfee549ddf94…

MALICIOUS

PDF

74.7 KB Created: 2021-03-08 18:44:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 15a178c263963190619f3cc7a8320be5 SHA-1: a03a2a76c0e9096f2d20ca911d33fc6dc06a653d SHA-256: e756cfee549ddf94ee8eab6e0b34e141d8ba774d17d24d4f97737aaad96b0904
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host or redirect to a malicious payload. The document's content, though heavily obfuscated, suggests a lure related to a 'Pokemon black and white 2 guide book pdf', aiming to trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/aws?utm_term=pokemon+black+and+white+2+guide+book+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4489844/normal_5fcebd5f3eac7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466408/normal_5fdc81cfa49b7.pdfIn PDF document text
    • https://cdn.sqhk.co/dufolatik/idgfgeb/jimopumava.pdfIn PDF document text
    • https://cdn.sqhk.co/jufenakajo/bbhgthj/50218641798.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/ehdhahc/ralojoligej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381528/normal_60172c193a5d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495694/normal_604630f9cdf9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502567/normal_601d4307c032d.pdfIn PDF document text
    • https://cdn.sqhk.co/nizufalagef/jfsgf21/how_to_get_psycho_bandit_skin_in_fortnite.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/hfhc8hf/3019231030.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462374/normal_5fd0da0bd8b57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454973/normal_5fd623d4d1e59.pdfIn PDF document text
    • https://cdn.sqhk.co/pepitaji/ag5ieu0/92089289736.pdfIn PDF document text
    • https://cdn.sqhk.co/tawavumazo/NYsohdc/68289047584.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456377/normal_60362f5f3afdf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8433fe1-fb27-4fe6-bc4f-3bc8fe425563/22640701915.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40f72d71-e378-435b-b40c-1378a04df837/where_to_donate_blood_besides_red_cross.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/082a83f4-8c31-45c1-9de7-3cc40d8d6bd1/sherlock_holmes_stories_in_marathi_read_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37ae8a53-42ab-4692-85a5-64bdd27492f4/baropabukumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88cf23f3-dc52-4a28-b442-0bf9f41440ec/ruvunomejojus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6014ad91-0828-47b8-bbf8-0a662428990e/how_to_pledge_delta_sigma_theta_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/063e7fc1-81b8-4578-a836-d64f29436823/how_to_play_minecraft_java_multiplayer_for_free.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_off0000e5cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CB 5724 bytes
SHA-256: 9a391a564ca9424a6c3bab82354e708d44a6e1381f4a56fc3f169ee4f29c0f02
font_01_sfnt_off0000f944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF944 10764 bytes
SHA-256: 8cd35425d63ebca0c154042dfbe9a050ae4d2335fdc6f049719a75e4c0562633

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