Malicious PDF — malware analysis report

Static analysis result for SHA-256 1038dc247d348e1f…

MALICIOUS

PDF

44.6 KB Created: 2020-10-16 06:26:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 6768547d3015ea47ec026262d47ba691 SHA-1: 74a69ad6bbd3b20089cac6dbc83575fae96ebcab SHA-256: 1038dc247d348e1fa29e2ec94c3336fc3ff3cbad2cbb7dcdc554443db81c9382
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?keyword=xiaomi+router+mini+manual In PDF document text
    • https://site-1042740.mozfiles.com/files/1042740/87555206321.pdfIn PDF document text
    • https://site-1041184.mozfiles.com/files/1041184/8839085217.pdfIn PDF document text
    • https://site-1043608.mozfiles.com/files/1043608/wozigofuxeduge.pdfIn PDF document text
    • https://site-1038879.mozfiles.com/files/1038879/49040518265.pdfIn PDF document text
    • https://site-1042450.mozfiles.com/files/1042450/zurat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5f8734ad94415.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5f88a35c2a3ad.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/webijuxudeju.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xizaxamuxive.pdfIn PDF document text
    • https://lupolaluxu.weebly.com/uploads/1/3/2/6/132681144/ronivibudijix.pdfIn PDF document text
    • https://fizolapojola.weebly.com/uploads/1/3/1/3/131383549/rexubim.pdfIn PDF document text
    • https://javezevefumutew.weebly.com/uploads/1/3/2/7/132740470/1086123.pdfIn PDF document text
    • https://site-1039612.mozfiles.com/files/1039612/23112297380.pdfIn PDF document text
    • https://site-1040437.mozfiles.com/files/1040437/dezitekurigef.pdfIn PDF document text
    • https://site-1036832.mozfiles.com/files/1036832/kujanurimugukunuvibifawa.pdfIn PDF document text
    • https://site-1039180.mozfiles.com/files/1039180/33971214011.pdfIn PDF document text
    • https://site-1048535.mozfiles.com/files/1048535/bologas.pdfIn PDF document text
    • https://site-1043248.mozfiles.com/files/1043248/48454637343.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/a9f12b2aa1eeba.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/mobulovolerik.pdfIn PDF document text
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/ddc9efb.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/6813382.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/32e063a95e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000722b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x722B 4632 bytes
SHA-256: eeab304f1b2d3d6a01bff4f19522ac34568cfa69377d515a3e47943d9a4b19ea
font_01_sfnt_off000081c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81C3 10208 bytes
SHA-256: b4b982535a923a4537314cc3fb8aec1632611d2a8073ef7f4920b900c13d4ea9