Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4a62bd110b5a0d8…

MALICIOUS

PDF

74.3 KB Created: 2020-12-17 00:53:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6133fd7cd0519689a871c5ceb29cc497 SHA-1: 69a9faa4349c99a9798792b565b465b888bc423e SHA-256: a4a62bd110b5a0d82743ee63b19fcb7db1b193b42c97474012d318b5535c6c47
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely as part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to song search results.

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://traffnew.ru/aws?utm_term=begum+jaan+songs+free PDF link annotation
    • https://gupovokezatiku.weebly.com/uploads/1/3/4/8/134878629/9489341.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488323/normal_5fc4efffe63cf.pdfIn PDF document text
    • https://jotinebemoti.weebly.com/uploads/1/3/4/6/134681432/6863756.pdfIn PDF document text
    • https://panikelixiguju.weebly.com/uploads/1/3/4/4/134478359/4712706.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454167/normal_5fd069935ab10.pdfIn PDF document text
    • https://ririrufazerox.weebly.com/uploads/1/3/4/5/134501654/5058706.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451023/normal_5fb9dece1644f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373008/normal_5fce4a90bc161.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://static1.squarespace.com/static/5fc56ff188c99b6d37c5dc1c/t/5fcd90236f0099009e7d39b0/1607307299935/sports_scores_on_apple_watch_face.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3c655d26ff1194f85c811/t/5fd68aceab1a676c7294a94c/1607895758353/2014_chevrolet_equinox_lt_owners_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2dbe5cd1e280355e0ef1e/t/5fcb8d24393ce47356355303/1607175461323/panda_pop_cheats_1421.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_off0000d837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD837 4936 bytes
SHA-256: bc92e3403710207cc578ce43a9eab93fc96bdf180a8ce944db6e12582c08d681
font_01_sfnt_off0000e8ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EE 11280 bytes
SHA-256: c6d68c003779c34ed2e70e678aeae9fbab436201470661bfd944bf34dadfcbf3
font_02_sfnt_off00010ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EBF 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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