Malicious PDF — malware analysis report

Static analysis result for SHA-256 70fcf5001605c86a…

MALICIOUS

PDF

71.4 KB Created: 2021-02-02 16:52:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: eba9d0d2dc55b85c5db404cbd22f1b10 SHA-1: 101a219145ba5d376dabc0e74003a7d2c20360b1 SHA-256: 70fcf5001605c86ad23626b66ac3f2c86901c0118a35388cbe29c26b81f30a71
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wb?keyword=problem%20solving%20skills%20books%20pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393016/normal_5fe5e2abac9a5.pdfIn PDF document text
    • https://cdn.sqhk.co/tikikizeveni/SJEhjih/nearby_chat_meet_friend.pdfIn PDF document text
    • https://cdn.sqhk.co/takejirasomu/Zu10WRl/kujujavulamosigu.pdfIn PDF document text
    • https://cdn.sqhk.co/pavujakorige/5gfKgcN/vawul.pdfIn PDF document text
    • https://nudabixe.weebly.com/uploads/1/3/4/5/134505388/1112655.pdfIn PDF document text
    • https://xozejobe.weebly.com/uploads/1/3/1/4/131406614/tesodubaga.pdfIn PDF document text
    • https://bozuwosumexoxal.weebly.com/uploads/1/3/2/6/132682772/6968774.pdfIn PDF document text
    • https://cdn.sqhk.co/padasagam/ib2ifEH/what_happens_in_maze_runner_4_book.pdfIn PDF document text
    • https://cdn.sqhk.co/zanemulazif/ihI1ibN/word_sweety_app_cash_out.pdfIn PDF document text
    • https://cdn.sqhk.co/nugunexinazo/hfsgfyF/94845543111.pdfIn PDF document text
    • https://gasezojilatinoj.weebly.com/uploads/1/3/1/4/131455825/rebuvupufejitapo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://girifej.epizy.com/bapibi.pdfIn PDF document text
    • http://fipaliwabalutu.rf.gd/internet_explorer_for_windows_10_pro.pdfIn PDF document text
    • http://kurujabarufuxe.rf.gd/confluence_template_current_date.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/pogewukos.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_off0000da56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA56 5416 bytes
SHA-256: 3e758164e976f8ba61dd27a3bfb915b5d3f3a97003ee38d514a047fc6faf75d8
font_01_sfnt_off0000ecb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB5 10556 bytes
SHA-256: 56d27a23457300191263240ca288c9b9460b0f60ae2cfee0a4b68b1d9154ab8a