Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6d47595f2414932…

MALICIOUS

PDF

51.6 KB Created: 2020-08-28 05:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 50e15f6b878913a939599547acaf9135 SHA-1: bc61a81a1a8e5c8aa5e02155853f6098b4cffa5e SHA-256: a6d47595f2414932b6770a2de7126d4fdc3ef29f5f4b79a24c69181f40098ebb
234 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.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ttraff.link/pify?keyword=shigley%252527+s+mechanical+engineering+design+pdf In PDF document text
    • http://bafikox.thedesigneil.studio/uploads/1/3/2/6/132681670/lalusezoxi.pdfIn PDF document text
    • http://mofabur.smallflute.com/uploads/1/3/1/3/131379866/jamerogasi-zetis-kexepe.pdfIn PDF document text
    • http://files.stonegatellc.com/uploads/1/3/0/8/130873822/nogibipafilokigobu.pdfIn PDF document text
    • http://files.tlblade.com/uploads/1/3/1/3/131398455/8972230.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/1/0429/9515/5105/files/30347214775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/buguzujemupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0595/0626/files/beholding_bee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6346/7414/files/puvisusirewolalubit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1653/1617/files/doduxelevisowigogew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8145/8069/files/88755279201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/hp_pavilion_f1703_power_cord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/the_old_man_and_the_sea_summary_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3096/0549/files/99082962392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2856/7448/files/rubugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/faxakaweni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7884/files/lagixekisokavivupulisiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0493/1746/files/burrows_and_badgers_rules.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009d99.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9D99 20228 bytes
SHA-256: d16eab947b1d866ca7afb51f1465e9e903bf7cc1a2e8421de27434fc535d6078
font_00_sfnt_off0000678e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x678E 5808 bytes
SHA-256: aaf8114529c62aa5481444fc37e773b21376197e07549807dcca66de0ed443d3
font_01_sfnt_off00007b36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B36 10000 bytes
SHA-256: 4f658abe63e174a9ca51dd29d96ad6eea08e340c331ce4e1e2ad596a5c027aa9

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