Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d1534382142aa41…

MALICIOUS

PDF

66.7 KB Created: 2020-12-15 22:41:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e0f405ccce727b37e525718ceff973c6 SHA-1: 9db6c619d6744055c4f3c3d78292be27d0996e5d SHA-256: 8d1534382142aa4129b95fa3f5ea705b48e50c7613b6e59a75f05c70a1c86cdd
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://trafficel.ru/123?utm_term=prayer+for+godchild', which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, suggests a lure related to a 'Prayer for godchild'. No scripts were extracted, but the presence of an external URI in a malicious PDF strongly suggests an attempt to redirect the user to a malicious site.

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://trafficel.ru/123?utm_term=prayer+for+godchild PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381528/normal_5f8c7dd39077a.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/c91e97cc-2ea6-4580-a0e1-b5015b3e6ac6/bijuforetitarose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87eef706-34ed-43f9-b0a6-0d0ac3f475b8/depumuzade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16556122-b558-4973-844f-f11057fd6351/diweli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e53f008-464b-4e57-83aa-3dda2dc3d600/newakekuxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a0d3fde-2ae0-49a8-9ffd-55288f06ce00/82890835265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76d157a7-7d18-4d5b-8adf-aae88b068759/34227103799.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc011b424b06a7eb3fa7d30/t/5fc25ce0f3de5e49b5b123fb/1606573280810/jikowizedoduzifajif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acefbd6d-1900-4ae2-b26b-b6576eab355e/wesesoxugaputejazaworapu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9accac0f-80c7-499a-8790-868bcaeb3202/37164635652.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc77a6fc39fde0238aa1b24/t/5fcb964f1880ce05e84d7fa2/1607177808587/ramodelafifexosov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50b6239d-8627-4c85-9467-4067eff79478/diwugawadaxozagitewal.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce9d83a58cf44a7cf925cf/t/5fcfe38959a6461ba15e149c/1607459721793/wamolazemudugajoneni.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2ef221452f90b7ff27d3c/t/5fcce816920f47545b944066/1607264279205/hack_crossfire_zp_zp.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_off0000c9e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E3 5208 bytes
SHA-256: 343498935af8e07e336181eac3a2e1892bc805b44f6f93eebc2af8960304be78
font_01_sfnt_off0000db9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9E 10100 bytes
SHA-256: 0d029d5693e2a12760418ecc176ecc04592513b944953c5751255be8e27c98cd

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