Malicious PDF — malware analysis report

Static analysis result for SHA-256 e144916485b43a64…

MALICIOUS

PDF

81.5 KB Created: 2021-06-08 17:53:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 69b99ebad92e1f8b17d4c985f518574a SHA-1: 7f50a4f62c8783353f6fcc959b39d6b4b380e07b SHA-256: e144916485b43a64014c0565fc1b9d71d2a35e7edd302c01c1db01692cbcda14
116 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 as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://philabc.ru/pbw?utm_term=jailbirds+greenville+sc+2017 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384159/normal_606e60f5f3589.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445114/normal_602af6856c3d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449395/normal_60bc9a885a5d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426819/normal_5feb16887a227.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475208/normal_5ff8813e828cd.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/59fb403c-1a6c-49d7-8771-6380f42b25aa/everything_that_remains_a_memoir_by_the_minimalists_espaol.pdfIn PDF document text
    • http://jeselivid.pbworks.com/w/file/fetch/144502308/pajanixaga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d791adf-1d33-4692-b217-f8dcbb6531c0/20177975102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/445c5558-f9ff-41fb-8dcb-6b6452ef12e7/hoover_windtunnel_2_rewind_pet_belt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/997e82b1-79e1-440a-8c73-9311b3b8f72c/what_foods_to_eat_while_taking_phentermine.pdfIn PDF document text
    • http://kibumezi.pbworks.com/w/file/fetch/144456561/fikedudufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc9cea23-8561-474f-bce3-26ad23f9c676/how_to_use_dual_bike_pump.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b7d4d72-7e0e-4d0c-a168-b1c641d963b1/python_dictionary_access_nested_values.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e76f3182-bc83-4c65-a74b-11ea45b311a5/fasepilezilaxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aecbc29e-bcc2-4e6e-a141-af7c01e7d6b8/70528875061.pdfIn PDF document text
    • http://xupatamim.pbworks.com/f/14459211782.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e36a25ac-6278-406d-ba2f-8bfeecddfdff/the_beginners_bible_noahs_ark_activity_center.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e945517a-78fd-4b3e-b5ca-9cba718aa9c2/bupixuduvupejejutuzil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e05818e8-c918-4fca-9265-c00b95015e6d/64852421130.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6499cfd8-4730-49e8-8367-3397cddf30e2/how_to_identify_stress_pimples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52bc8eba-72ab-4b02-b9ca-208bc18546a9/how_do_i_send_commissary_money_to_an_inmate.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_off0000f34d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34D 5300 bytes
SHA-256: 7615a4bbb748fab60859fb5b676c1642aa1863e1ca2677292ea837107c673a56
font_01_sfnt_off00010556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10556 11048 bytes
SHA-256: 1c3b2c76372ddd46f8f529ec515806661fe70943b8556d928ca2f17e24be15bf
font_02_sfnt_off00012ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AC0 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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