Malicious PDF — malware analysis report

Static analysis result for SHA-256 e866c605e9a3ec2d…

MALICIOUS

PDF

67.4 KB Created: 2021-02-19 06:06:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 228cadda779726591f3af5d827214949 SHA-1: 7dfa80d84b58320e901ed9bdc28e27687842eff6 SHA-256: e866c605e9a3ec2db20233ca6900eadacd7f640a80a69689f025d8a17ea51dfa
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, with a primary URL pointing to a search query related to business name statements. This suggests a tactic to attract users through SEO manipulation or phishing. The presence of a PDF link farm heuristic further supports the idea that this document is part of a larger scheme to generate traffic or distribute malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent, likely related to distributing further payloads or redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://maypoin.ru/wix?keyword=alameda+county+fictitious+business+name+statement+search PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421639/normal_600f9e469a258.pdfIn PDF document text
    • https://mefosenide.weebly.com/uploads/1/3/4/7/134715399/soguli.pdfIn PDF document text
    • http://meetplafond.xyz/rubik_s_cube_notation_guide6p4na.pdfIn PDF document text
    • https://sekojeti.weebly.com/uploads/1/3/4/5/134583019/xejotafiwuk.pdfIn PDF document text
    • http://myluckywin.site/starcraft_2_cheats_codesor6fr.pdfIn PDF document text
    • https://suruvimaweluza.weebly.com/uploads/1/3/4/1/134131456/sepapef_rebaloda_fimokonesezad.pdfIn PDF document text
    • https://pufabakorulur.weebly.com/uploads/1/3/4/3/134320636/lozaziko-lagit-witipupovufati.pdfIn PDF document text
    • http://grizhoff.ru/loxomomikufodigisivedsw7s.pdfIn PDF document text
    • http://small-italy.space/easy_friendship_bracelets401nj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/delhi_home_guard_bharti_2019_online_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/toefl_test_questions.pdfIn PDF document text
    • http://wisotujapu.epizy.com/fujesilogis.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/85982168400.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/18443117604.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/61458081937.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_off0000c911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC911 5492 bytes
SHA-256: 305b144d4b9a7ab9547d6d548de41251477fe7c32858489f7863755dbab0c45a
font_01_sfnt_off0000db9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9B 10752 bytes
SHA-256: d87373265f4659a4feb78990c9a741a0a06c6878d918356d0950d6a8f54a7613

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