Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d5779f2c447ce2c…

MALICIOUS

PDF

45.7 KB Created: 2020-10-14 19:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 30a43259e490e151b7e89719bd44c2aa SHA-1: 8adc97ccf9773f7f5402612730dc58108975fa69 SHA-256: 3d5779f2c447ce2c0cd03269b4182bc8d14c2869476c59264678adc3167e791a
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://cctraff.ru/pify?keyword=smurf+village+apk+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f872a6fad1f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f870264cd2ca.pdfIn PDF document text
    • https://site-1039423.mozfiles.com/files/1039423/57692558824.pdfIn PDF document text
    • https://site-1043453.mozfiles.com/files/1043453/86876339331.pdfIn PDF document text
    • https://site-1039198.mozfiles.com/files/1039198/gekezub.pdfIn PDF document text
    • https://site-1043158.mozfiles.com/files/1043158/samozegisuruw.pdfIn PDF document text
    • https://site-1038622.mozfiles.com/files/1038622/18769094721.pdfIn PDF document text
    • https://site-1041501.mozfiles.com/files/1041501/luwojagufoxo.pdfIn PDF document text
    • https://loguxofe.weebly.com/uploads/1/3/0/7/130775118/gewogudanibow.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/3722212.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/wogiselaruto-nokage.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/1392291.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/a7f91e4c9.pdfIn PDF document text
    • https://site-1048452.mozfiles.com/files/1048452/31455559151.pdfIn PDF document text
    • https://site-1044146.mozfiles.com/files/1044146/77543818696.pdfIn PDF document text
    • https://site-1043601.mozfiles.com/files/1043601/26653459828.pdfIn PDF document text
    • https://site-1043053.mozfiles.com/files/1043053/90139507925.pdfIn PDF document text
    • https://site-1038471.mozfiles.com/files/1038471/10623760283.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/39435e47-befd-414f-b158-045916845011/lepufifulipadilobabupom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca738a56-fc23-4bb0-ac29-f4800a530943/netejunokagifapubameziwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03a27651-afc8-4348-9a3d-1ced4d099f30/gazexufididokobewat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5a03f40-c66e-4984-93fd-462c14986ce1/bilejasaw.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_off00007373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7373 5500 bytes
SHA-256: 50d64b0423e0fa625aaa8070546b6d68866b4b2eec6dc271d9434476bfe142c4
font_01_sfnt_off00008628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8628 10192 bytes
SHA-256: 46b5d64d3c17fce0c396f1bef763b3ba0b38f24e451a048f612261730406c41d

Open this report in the interactive analyzer, or submit your own file for analysis.