Malicious PDF — malware analysis report

Static analysis result for SHA-256 68454a5fd8373fcf…

MALICIOUS

PDF

71.6 KB Created: 2020-10-04 08:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: f4506d2d57c140e803b7ef3dffb8fe2d SHA-1: f9dbb7d765cd6a7abcf3ad2f0c1171f3222a9ab4 SHA-256: 68454a5fd8373fcf15f843d12fb6560c59a08a44ff39ab509db63a7da0848013
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://gettraff.ru/strik?keyword=durga+saptashati+pdf+in+bengali In PDF document text
    • http://files.greenrockswarmbloods.com/uploads/1/3/1/1/131163615/27c65c2e66ef.pdfIn PDF document text
    • http://boneso.stfrancesbasketball.com/uploads/1/3/1/4/131453741/f71994dc8.pdfIn PDF document text
    • http://files.fomlures.com/uploads/1/3/1/4/131453917/vixozerotowajizol.pdfIn PDF document text
    • http://nezog.homecinemas.ie/uploads/1/3/1/4/131407014/2e1130.pdfIn PDF document text
    • http://files.lovettpianoworks.com/uploads/1/3/0/7/130738712/5672181.pdfIn PDF document text
    • https://site-1041075.mozfiles.com/files/1041075/xomudarazikagavitunux.pdfIn PDF document text
    • https://site-1040327.mozfiles.com/files/1040327/zoxabugafizugi.pdfIn PDF document text
    • https://site-1036969.mozfiles.com/files/1036969/bopetijukaterabelajopamip.pdfIn PDF document text
    • https://site-1036630.mozfiles.com/files/1036630/nemewiwewokab.pdfIn PDF document text
    • https://site-1037085.mozfiles.com/files/1037085/34295205659.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5169/8344/files/1867724976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/9552/3227/files/le_palais_vintage_model.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/necky_looksha_17_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/imovie_09_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee4bcde6-3cd3-4a2d-8bfe-fc50cbd02ecb/nowutepevotibowufiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7360533-fe2f-4628-98b0-f1562ef70484/24722403335.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5af7df9c-65e7-44d0-934a-023b8b8da0bf/914806470.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7755 5216 bytes
SHA-256: bd4013525661e154d5f5ae4c00c8a8c1ddb1e583a15744225a89f34d50975bda
font_01_sfnt_off00008907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8907 8680 bytes
SHA-256: cff07196ec9ea2a75f618847d5e4209c75387405a6c5fdef070fe31d084311e2
font_02_sfnt_off0000a527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA527 13708 bytes
SHA-256: 561296e448c9c94779c6178ddd3a3654082d8e9731ba16ef0215b3aa31eefbd1
font_03_sfnt_off0000cfcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFCC 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
font_04_sfnt_off0000ddcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDCD 16416 bytes
SHA-256: 6c95d44f21738c104e16e54dc0e8ea12858e5971f4cfb9e3e7ce5804a60906d6