Malicious PDF — malware analysis report

Static analysis result for SHA-256 c44c0b4327d254a4…

MALICIOUS

PDF

75.6 KB Created: 2021-05-24 07:10:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: df8854d5adfce2cd7ce771e93e52ec23 SHA-1: b436eb1eafb42a6eeca8d283eed51bd30686679f SHA-256: c44c0b4327d254a48bdb6ad2e2b4c20c5fbd00b3a71c045be1189d51c8816af3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document flagged by ClamAV as 'Pdf.Phishing.Trojan'. It contains an embedded URI pointing to 'resalured.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, contains text related to song lyrics and the authoring application, suggesting a lure to disguise malicious intent. No scripts were extracted, but the presence of an external URI and the phishing detection strongly indicate a malicious intent to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=westlife+my+love+lyrics+video+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4468831/normal_6038756b21221.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446165/normal_602cdf278c0ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490934/normal_6022e9b6bca03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410222/normal_60125d8c19c3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374686/normal_606ad5434176f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383131/normal_600c07b71159c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427268/normal_6033805987239.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458826/normal_5fe33d9b77c85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376359/normal_6046da89df4ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403680/normal_6012884344b01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405638/normal_5fda95c3046fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414486/normal_6013bc97c40fe.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/683f8c94-d1bf-46db-8cbd-d1ddd19a666c/zupilavoresejazomuxiwunuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e5852ca-0b31-4cff-ad41-b8448d002196/fomoxadelogoduwev.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/crash_bandicoot_wrath_of_cortex_gamecube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1eeacaad-7e96-4469-85af-ef82fe789382/no_game_no_life_zero_shuvi_wallpaper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37cc6310-805f-4c8b-982d-0f9257eea55e/what_percent_of_cochlear_implants_are_successful.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/area_of_sector_and_segment_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82544813-fa3b-4a31-b899-cd0799ef5edb/hip_hop_charts_albums.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_off0000dc2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2A 5220 bytes
SHA-256: eb4bb1b4061a13c116afaa6ec2d65a3955ccc20cbbdf30952e1e0e2c50028b5d
font_01_sfnt_off0000edf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF0 10884 bytes
SHA-256: e88eae80655222aab9cfd159356045982226af04b0ec3802aa05bf1a5fe927dc
font_02_sfnt_off000112ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112EF 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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