Malicious PDF — malware analysis report

Static analysis result for SHA-256 6462c16c9637941b…

MALICIOUS

PDF

45.5 KB Created: 2020-10-25 15:20:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ed529c09e34deb2c40749cc325ade89c SHA-1: ef705bbfbd63e99140063081cd2228fdab7582a8 SHA-256: 6462c16c9637941b4b3ef1bc357ba019b8e20263196578d90b38455e795c2531
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector URL associated with malicious activity. The document body text, though heavily obfuscated, contains the URL 'https://gettraff.ru/strik?keyword=bible+scavenger+hunt+pdf', which is also flagged as a malicious redirector. This suggests the document is designed to trick users into visiting a malicious site under the guise of providing a PDF.

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://gettraff.ru/strik?keyword=bible+scavenger+hunt+pdf In PDF document text
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/nefiwajobanus_xejazesi_zogiloj_zumugogupega.pdfIn PDF document text
    • https://dozasasakebo.weebly.com/uploads/1/3/1/1/131164234/gezuluga_bevowas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/daae2161-85cd-4156-bc56-0f454461f692/35751918231.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b754750f-fde7-4909-8ffe-139f56a035ba/nebemuxukasak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86be42ea-729e-4547-bd9b-c94fe7d8997a/66788755262.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48578554-8686-479e-84e7-8821736d38d3/behringer_1204usb_driver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1072dabc-ba8b-4a9a-bc92-62bc49367fbe/47175214287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/6660/2694/files/woputata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/9155/6031/files/sozes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/7713/3222/files/68412672903.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/lng_bunkering_vessel.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/gidubov.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/29195819940.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/biwukofez.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/tuxotumuz.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/xivawaxoxililasajeb.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/autogreffe_de_cellules_souches_hmatopotiques.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7347 5668 bytes
SHA-256: 4033fb278889b9299fda8aa2ff5a38050ad78071667c7f8c6e2d083af61fcfd1
font_01_sfnt_off0000867b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x867B 10188 bytes
SHA-256: e8337ff366447387cc22d5fcc607efac1ae65d461bfc89b9f01abbb6ecc013f9

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