Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a83615a15073d63…

MALICIOUS

PDF

39.7 KB Created: 2020-10-25 07:31:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 947630ab4d2661915be502e9b217db72 SHA-1: 4dc11b424cf4ee2f0ff444f99cb6c3a9ce0c54a6 SHA-256: 1a83615a15073d63815e1a077d7cce9c34f42c013060c13fe95bb7675321ee38
194 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.
  • 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.
  • 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/123?keyword=finishes+in+building+construction+pdf In PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/3173412.pdfIn PDF document text
    • https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/3381949.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/leguvefu/beginner_s_guide_to_digital_painting_in_photoshop_characters_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/fovezimunasomug.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/91091600574.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/vemumariruvimatasop.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/15930169995.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/62974071090.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/wifom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cd4eaa3-00bc-4804-9190-d3be079bb2e2/wiwowopuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58cccf7a-9f28-4028-ade7-204b83525ac6/46386183933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/2873/9745/files/fcaps_network_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4050/4480/files/78711790648.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5afcec1b-7670-4980-9c18-0a940394d13e/bazeson.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/966dc4cb-003a-4c55-a8ba-4efddf048344/fosafod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a13587e-d549-495a-adac-8ac87f4e1f23/dowujetem.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_off00005da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA1 5304 bytes
SHA-256: 219fad505ef4b7a049a6e87d81fb99adeafe02505c04c0b691d434a4da0730d7
font_01_sfnt_off00006fa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA5 10036 bytes
SHA-256: 271e5f6977e765e4e783dcc78ef46a3d70c60316561278e762767a002b303285

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