Malicious PDF — malware analysis report

Static analysis result for SHA-256 c800798ce63847db…

MALICIOUS

PDF

58.7 KB Created: 2020-10-15 20:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 03ab585398077504ac9fac4eb61d0d73 SHA-1: fd9da7f3283b2109493c467d8f641cc0ab196da5 SHA-256: c800798ce63847db330f07fd522ac157947c0e3f6fa711a2affe1b7d4f3d7101
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/123?keyword=hornet+premium+cracked+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368494/normal_5f87ba64a4240.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369768/normal_5f88402630a0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f877ade907be.pdfIn PDF document text
    • https://kusanogiwaxug.weebly.com/uploads/1/3/0/8/130873987/bakigomegomir-nasimagelam-biwulebubikid-povisavage.pdfIn PDF document text
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/kefasene.pdfIn PDF document text
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/7593995.pdfIn PDF document text
    • https://site-1048178.mozfiles.com/files/1048178/lujewatinoguwikesuvalaj.pdfIn PDF document text
    • https://site-1042348.mozfiles.com/files/1042348/gutufekasasakonup.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/jibigamefomoni.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/duwivif.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/vovofofaverun_sawivurovoj_nifawubazox.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/tixobenudofezibet.pdfIn PDF document text
    • https://site-1040363.mozfiles.com/files/1040363/papas_sushiria_apk_pc.pdfIn PDF document text
    • https://site-1043650.mozfiles.com/files/1043650/25819764273.pdfIn PDF document text
    • https://site-1037115.mozfiles.com/files/1037115/49570705185.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4699/3052/files/89474165980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7125/0333/files/worldwide_cost_of_living_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2677/0852/files/67177204705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9232/1451/files/nodabes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4105/7687/files/8210039386.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8377 4256 bytes
SHA-256: a3e40fe800ab317c92f99487e70792b89131131a11adea02578132bc4805bf7d
font_01_sfnt_off00009250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9250 5032 bytes
SHA-256: 7f4e34ce8599dce237f60c61ce0aa739f07170b70a39a3ce43f5e037c9b45fc5
font_02_sfnt_off0000a350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA350 10480 bytes
SHA-256: c9d4b2a93c1164b4c51b80c79d3e85ff82dd7153f6a12c0ab98668dfd5b8961a
font_03_sfnt_off0000c75c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC75C 16168 bytes
SHA-256: 0216150ac0e5ade23b072752459620ec704bdac01526bfbadd96d51f96873ef3