Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8d394ef65f50fac…

MALICIOUS

PDF

49.7 KB Created: 2020-10-01 03:29:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: bb7ad102012ff26cfbc8cf64d054e5f0 SHA-1: b4b0a52f1a434ce87c7bb7a2b72e185d5925bf4d SHA-256: e8d394ef65f50fac3ad7f52beb49bded693387f3ba0ed0207bc44d2aa7f0553d
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ggtraff.ru/strik?keyword=bienestar+animal+definicion+pdf'. This URL is likely used to deliver a malicious payload or phish for credentials. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious redirector suggests an attempt to lure the user to a compromised site.

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/strik?keyword=bienestar+animal+definicion+pdf In PDF document text
    • http://files.heartsoultours.com/uploads/1/3/0/7/130775017/ab5a6.pdfIn PDF document text
    • http://files.awakenhopeandwellness.ca/uploads/1/3/2/6/132682471/mewotafejimoba_xenizirego_kopodizi_pizofizufor.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/53ccac3b-1ffa-43ae-a241-1171a40b5459/sovagizofupixuposomovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71189db3-6d32-4d44-830f-355f755aab9d/73724701821.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3c66786-65ca-4826-819e-35c952726dce/gizatewisiwubirizolituzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9831/6705/files/begebilesixorogobesogawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1869/0458/files/10723377476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3997/3788/files/rolodol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/tawuxutaxuvanuzefiduzomud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1463/5165/files/xijufix.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_off000085ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85EE 5348 bytes
SHA-256: 646480129ae0a787cc79e301f0872a56421160b08069d6dd89c01bd134da55ed
font_01_sfnt_off00009807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9807 10036 bytes
SHA-256: 29823c015331ecca49a54357ec71390c70d3a361baed0a38c38f57cdb964f2ec