Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e426efed7fc1e9…

MALICIOUS

PDF

88.2 KB Created: 2021-03-25 05:39:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: ba47c28f34142fe72fcd6b4803f52523 SHA-1: ab9c480c2e5df4a6acb0c4b05825d63c2ac66a6d SHA-256: a8e426efed7fc1e997141db20f64452e43a0eaf1299b4b9983ff1c316ee0eeba
186 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to numerous external websites, many of which are hosted on disposable domains. The primary lure appears to be a search result for 'what does angel number 555 mean in love', suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these linked sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://nipisod.ru/aws?utm_term=what+does+angel+number+555+mean+in+love PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455660/normal_6051a6fb50781.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/5232173.pdfIn PDF document text
    • https://pukaxixuzex.weebly.com/uploads/1/3/4/4/134492253/bokedirevu-gilofovuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404299/normal_6047f334ad336.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490371/normal_600253de61913.pdfIn PDF document text
    • http://xerijegodufiw.mypressonline.com/los_canones_de_dort.pdfIn PDF document text
    • http://jilavixit.medianewsonline.com/piscicultura_de_gua_doce_embrapa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385437/normal_5fcf3ec9ebeeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384652/normal_6025a78b6c67f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370087/normal_5fc5e96f00c06.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458826/normal_5ff4973198a14.pdfIn PDF document text
    • http://ladiluvame.mypressonline.com/disikuwekotale.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405639/normal_605beaabc135c.pdfIn PDF document text
    • https://bevibobozile.weebly.com/uploads/1/3/4/7/134700853/f5c90f1b9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/fe07e8b9-ed70-4de0-b138-6422b8b0bf7a/gemumuparazilijofuwitebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54832ed0-9d67-4ad4-8725-74ee590bad03/29893166296.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3229698b-c779-4ef2-b104-ba3cf6687b87/what_are_the_key_concepts_of_classical_conditioning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e868115-4e02-46cb-9ac6-dce90e78d34d/mazda_cx_5_owners_manual_2016_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9fb6695-0844-4d6f-97b1-c5b734625b40/all_css_properties_and_values.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec73c33f-eaa7-4b9f-bad6-226d18b54450/give_me_liberty_chapter_3_focus_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1794df5b-0ec3-4325-8244-4d636ba6977c/60198702047.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010dd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD7 5460 bytes
SHA-256: 2dad82f39da360e9cc78d1e03704033cfc2fc2b5fd546db61c3c990604a90e86
font_01_sfnt_off00012044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12044 10840 bytes
SHA-256: f91b8290990f90733a8bd34c1cf7be0965e2876165636ce8c1cdd9b4fea60592
font_02_sfnt_off000144d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144D5 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c