Malicious PDF — malware analysis report

Static analysis result for SHA-256 588592150895f560…

MALICIOUS

PDF

44.0 KB Created: 2020-11-01 01:19:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: d6ffba7ef8a9d0082006e8509f002181 SHA-1: 8f987cd66f727ac4974f9a78342ed08a895c6b88 SHA-256: 588592150895f560e1d93458bc06a22e8b9726a2b2cf3abbe79fab0863959b1e
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The embedded URL, https://ggtraff.ru/aws?keyword=hp+laserjet+m3035xs+mfp+service+manual, is likely used to deliver a secondary payload or phish for credentials. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ggtraff.ru/aws?keyword=hp+laserjet+m3035xs+mfp+service+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4424036/normal_5f9cff250e524.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380527/normal_5f8bb162bda09.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/sobibizagavubuna.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379221/normal_5f8b5806aa0f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367938/normal_5f87e251448eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372982/normal_5f95806fe317d.pdfIn PDF document text
    • https://zurukuwimuso.weebly.com/uploads/1/3/4/3/134325804/9935316.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f8eeb8c2f139.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/0cdb43a1-8a1c-420f-a880-caa7317e8493/lakexoboxiralifogeme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaf5dc34-6698-4df6-9d4d-2b2fe5e0cd6c/4th_down_football_game.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/botizijib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bedf5b2-ad82-4681-b302-2409e822f51a/yaris_performance_parts.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_off00006ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA3 5756 bytes
SHA-256: c07bede93c368b4f65db89386a3f0f59308f2d72593a2861a07e80c3158bfcf2
font_01_sfnt_off00008031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8031 10340 bytes
SHA-256: 80bf2cdddcfac8dadd698c0a886887ced1cf1c1ddfd4a0a5eb3239a10f6c9ccd