Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a3550ebafe00ed5…

MALICIOUS

PDF

47.7 KB Created: 2020-11-02 16:52:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b1e6e9fac3791e857080b39df350b042 SHA-1: 1b36a5bbc92bf9dca8d1267bb2c57827eea89865 SHA-256: 0a3550ebafe00ed5b464e09cc7c8e3a2de077e42e7d898cc8e562451abc2e5e0
102 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and heuristic firings indicating malicious redirector links and ML classification. The document body, though partially corrupted, contains text suggesting a lure related to 'Quickbooks online training manual pdf' and includes the malicious URL. The presence of a malicious redirector link strongly suggests an attempt to lead the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://gettraff.ru/aws?keyword=quickbooks+online+training+manual+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403556/normal_5f921555eb769.pdfIn PDF document text
    • https://jadekida.weebly.com/uploads/1/3/4/3/134349878/rosusisi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381962/normal_5f9a79de8738b.pdfIn PDF document text
    • https://biwazasidatuf.weebly.com/uploads/1/3/4/3/134373857/lemonezenoxuvopa.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/baritexovopa/67317443505.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36841ae8-a070-42ac-9788-22f2124f6a33/84557698999.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0b7e2f9-e870-48c9-8a52-1f6665054f04/38632960064.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/dediwodeguvotasarejoj.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/definition_of_first_aid_kit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5172/9574/files/tuwer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55ac372c-4464-4d3e-a21b-32259464ed30/46831626757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5698/2937/files/noposibeve.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/fewimenef.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/jofosirofutudixaf.pdfIn PDF document text
    • https://s3.amazonaws.com/luresimosip/one_up_on_wall_street_epub_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/fundamentals_of_piano_theory_level_1.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_off00006fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAB 5740 bytes
SHA-256: 1662256c4d8761b1f593f451e5c4d8fb3cf4164d1b01931805f431741b92f5ac
font_01_sfnt_off0000831b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831B 2268 bytes
SHA-256: 7f38c7bd3076d5ec567b373f8788658f617417f44aeaffad1c2d563936ecbb0a
font_02_sfnt_off00008d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D2B 10716 bytes
SHA-256: bd00c6f18ba47d1c9a02132906d910bb16ff232424341fa948d6ea8e98561911

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