Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc3a7167c95f120…

MALICIOUS

PDF

82.2 KB Created: 2021-02-16 11:07:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a0682b6e152598633679b0b7d09f7cea SHA-1: 5edafd3e399ab8899f042b2f133b3c2d6bfef8fc SHA-256: adc3a7167c95f1208e54d56f6c3c1847d54efa4c91314f8b809f854b5df494f1
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 a URL that mimics search results for 'shop vac motor replacement parts', likely a lure to trick users into clicking it. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to a malicious site, potentially for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/aws?utm_term=shop+vac+motor+replacement+parts PDF link annotation
    • http://wajufogisabo.iblogger.org/jakenotoderedakerinefi.pdfIn PDF document text
    • https://cdn.sqhk.co/gapobuzijiru/cm8jddJ/how_to_play_bubble_wars_2.pdfIn PDF document text
    • https://cdn.sqhk.co/xoguvamev/VjfXhhG/77636686698.pdfIn PDF document text
    • https://cdn.sqhk.co/mafowixodi/qGLxYhe/3d_puzzle_harry_potter_hogwarts.pdfIn PDF document text
    • https://cdn.sqhk.co/jivumigen/JtjbVLh/vidimuzegerosedaranakuxu.pdfIn PDF document text
    • https://cdn.sqhk.co/gixezovof/g1jiicX/likert_scale_examples_always_never.pdfIn PDF document text
    • http://like-store.site/7854152548zig87.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/taguxif/31224518295.pdfIn PDF document text
    • http://laxunuwozen.epizy.com/90135575355.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/java_jdk_64_bit_zip.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/79028532249.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/vuxewadizadupexidotopabe.pdfIn PDF document text
    • http://pixagikaw.epizy.com/year_three_addition_and_subtraction_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/27576619899.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/wududuwaxovozetimasefumig.pdfIn PDF document text
    • http://sexikiti.epizy.com/test_de_apgar_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/kanefutawizowigosapatut.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/coliform_bacteria_ez_test.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001039a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039A 5336 bytes
SHA-256: 2f6fe0809e0751f2d5d9b9dee13780180be444205231540768c4dda6583b79cc
font_01_sfnt_off0001159c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1159C 11056 bytes
SHA-256: 671d4f3d3f4e22ce96507e91406ebda8b90df74f9f93108223fb1f4df804ea74

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