Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b6e38e7f8856863…

MALICIOUS

PDF

46.7 KB Created: 2020-10-15 02:11:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: e21f711554faed1ed343cb7f1557bb3e SHA-1: fc499381f10f2793cacb8abd240a3fea1b461e9f SHA-256: 5b6e38e7f88568636194d2ad989292ad4b1e7536d8c0f87b5549cad1f9ef892c
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=type+and+speak+app+android In PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/daxasolizi.pdfIn PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/4328668.pdfIn PDF document text
    • https://mogezisatizate.weebly.com/uploads/1/3/0/7/130775403/2027730.pdfIn PDF document text
    • https://fadusoga.weebly.com/uploads/1/3/0/7/130739873/nubowukimowiv_wiperem.pdfIn PDF document text
    • https://site-1038720.mozfiles.com/files/1038720/xufosigegurozi.pdfIn PDF document text
    • https://site-1036862.mozfiles.com/files/1036862/69152730123.pdfIn PDF document text
    • https://site-1039305.mozfiles.com/files/1039305/lumarefokujom.pdfIn PDF document text
    • https://site-1036862.mozfiles.com/files/1036862/mugomizazali.pdfIn PDF document text
    • https://site-1043170.mozfiles.com/files/1043170/kazano.pdfIn PDF document text
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/6316108.pdfIn PDF document text
    • https://paduxadoduxim.weebly.com/uploads/1/3/0/7/130775016/baxurumi.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/fafajaxunej_fifuxosuw_jilapowebemibi_rabadu.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/ce6909b5-c34b-45d8-b1d7-96fd342fc5bf/58533410268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33199ad5-bb16-4284-9526-e507da456004/vunogidixemesasepu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26297e3e-974e-4b7b-b0f8-7d4cb9209a37/48222738721.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/234936b8-fc20-4869-8902-a39e492b12bb/zijuxedelinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8881/7562/files/fitzgerald_toyota_gaithersburg_service.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9053/4307/files/riraxapedudajozulojub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/9611/4847/files/pictures_of_pomeranian_puppies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53cf060c-7efd-43ac-9e82-f07f9e3d80d0/7973046302.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22097a46-7489-4b79-9802-2034abea3f28/34615820313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27f50999-fc6a-4956-a346-1f8bf9c58670/74566746415.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdf26ebe-6837-452e-91d1-c4be10af0a98/novujusawigijisokoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24981384-0420-40ba-92ae-3bc9f7d4e2be/jesoledarulabaleruborazab.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_off000077ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77EE 5036 bytes
SHA-256: 31cbe07cbbea4895492ab34ec72e7bbbda4b0d7f07d8f35cdd5f3c557efcde4b
font_01_sfnt_off00008925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8925 10664 bytes
SHA-256: 21418cb4766e2ba3cf9c4797ad50ba5dba5cb4cee664662e8cde62f58639752a