Malicious PDF — malware analysis report

Static analysis result for SHA-256 a85b337f82ba629c…

MALICIOUS

PDF

435.9 KB Created: 2020-10-25 20:26:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e6ab399d9bf348e6fb509bdfe5a2d262 SHA-1: 16f89497d403d8bd94d818e3bac738e52dc6041f SHA-256: a85b337f82ba629cc7ab0e12b30703ec3a5ba7b725e4476d172f434d57514e07
94 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ggtraff.ru, which is likely intended to lead the user to a phishing or malware download site. The embedded URL is disguised within the document body, suggesting a social engineering lure. No scripts were extracted, but the presence of a malicious redirector strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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=carbohydrates+quiz+pdf In PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/9473420.pdfIn PDF document text
    • https://gumomamomav.weebly.com/uploads/1/3/1/3/131398069/kasusa-bisoponodigupi.pdfIn PDF document text
    • https://ximazula.weebly.com/uploads/1/3/0/7/130738777/refub.pdfIn PDF document text
    • https://lirebuzufosol.weebly.com/uploads/1/3/1/4/131453665/sirado.pdfIn PDF document text
    • https://wevuviwujito.weebly.com/uploads/1/3/1/6/131636984/c22cb388453e95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378171/normal_5f9595f60181a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375507/normal_5f89e91fd4d9c.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/fe9275f0-f56f-4929-a7a8-01385d1e7d4b/lazax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91534dcd-996f-4990-8c91-7bdfe92d4b44/34280017814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb88a6ac-3cdf-4370-b024-3e552bf6c90d/51271509674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48aee0bf-037a-4121-b203-118011685970/texisuxavuzatujarerumalad.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/xaduxokinup.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/hernia_abdominal_clasificacion.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/30756751122.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/74554217721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/church_bulletin_board_ideas_for_summer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1512/5662/files/sejarah_sastra_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4347/7909/files/hydraulic_directional_control_valve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3130/files/a_love_to_last_july_26.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/8997/1350/files/bevotexedaleba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a72a81c-1a0f-4a7a-a6d6-2b7e5d9e3477/vixoxinamekeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2664b42-e2c1-4ee1-83a3-ba58a6f902a0/24667460788.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5186070a-da36-45b7-bddd-54174963f5cf/sagibinosowu.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_off00067fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67FD5 5420 bytes
SHA-256: 788d2cadf71d1bdc531bfe2475c271c887e46c226176aa55c20e6674cda77cb8
font_01_sfnt_off00069248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69248 13504 bytes
SHA-256: d19c7d059f04611e250b54af1b3ebd5de911cf47d9e11dd097f185406aabad63

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