Malicious PDF — malware analysis report

Static analysis result for SHA-256 a03344ffcd0321e9…

MALICIOUS

PDF

55.3 KB Created: 2020-11-09 16:11:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eba607d3b48577b6dfcc59c32c8f546c SHA-1: aa5821984f16337a1fa23284de33b631851aca67 SHA-256: a03344ffcd0321e903159b75e7ed0a2d923e904668ccb93547201b0d8ed8fc4d
94 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and contains a link to known malicious infrastructure. The embedded URL, 'https://ggtraff.ru/aws?keyword=brandt+guide+books', is likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lure the user into navigating to a compromised resource, potentially for further exploitation or credential harvesting.

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=brandt+guide+books
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/92b11240d9c88e.pdf
    • https://fomikozifu.weebly.com/uploads/1/3/4/5/134511133/xenudowuxepifojose.pdf
    • https://jikesekija.weebly.com/uploads/1/3/4/3/134367489/6043851752034.pdf
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/suxazuvijinawe.pdf
    • https://cdn-cms.f-static.net/uploads/4371508/normal_5f8fd847711d8.pdf
    • https://rawixokuboja.weebly.com/uploads/1/3/4/0/134097397/1671743.pdf
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/7482988.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/bisegilupuf/64063213434.pdf
    • https://uploads.strikinglycdn.com/files/29f1618d-1224-4050-bbdc-5dfc021e0dd3/sekugulovelogejezijaxob.pdf
    • https://s3.amazonaws.com/fuwawibu/japopobibotose.pdf
    • https://s3.amazonaws.com/lotibabakuj/mozilla_firefox_download_apk_pc.pdf
    • https://uploads.strikinglycdn.com/files/1a9bb880-b0fa-4bd3-a940-e773d97583a7/lotajukalopoxedol.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000088d6.bin
f87324fb50be7cd5605e2881503568c7d695ebef3d56bb84a26bca278a970d54
pdf-font-stream PDF embedded font (sfnt) at offset 0x88D6 5096 bytes
font_01_sfnt_off00009a2f.bin
40bfc438024f0de575ff75442203c05924e07ed6e29a9c69bf34bd6feabfd91c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A2F 12380 bytes
font_02_sfnt_off0000c2f9.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F9 4324 bytes