Malicious PDF — malware analysis report

Static analysis result for SHA-256 be9da55047af84d3…

MALICIOUS

PDF

61.4 KB Created: 2020-09-30 17:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: bd53843090050f85879e4abcd6b4bd4c SHA-1: 90b7d1a17ae4990f89d33c076969f97cf3272aea SHA-256: be9da55047af84d391d23b8c65a1fc57cbcb0d4415781992e721c7cfd6b12cdb
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=teacher+appraisal+form+pdf In PDF document text
    • http://files.tablerockfoundation.org/uploads/1/3/0/9/130969316/4333bca03d.pdfIn PDF document text
    • http://files.playandlearninstruction.com/uploads/1/3/0/7/130775649/fovuganirelemaz_banag_rofenib.pdfIn PDF document text
    • http://files.feltham-twickenham-ps.com/uploads/1/3/1/0/131071037/wibutidale-kiginetose-sexevafonuk-nibuzolubixeti.pdfIn PDF document text
    • https://site-1036819.mozfiles.com/files/1036819/vutarajiju.pdfIn PDF document text
    • https://site-1036697.mozfiles.com/files/1036697/38580000624.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/1/0478/8171/5878/files/ram_expander_pro_apk_root.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/wudaneb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3105/7816/files/room_rental_agreement_alberta_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/cae_exam_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/6896/6300/files/ashley_williams_mass_effect_romance_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5955/5735/files/nesidapuwobagitafexilav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4899/files/15689931785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8769/9876/files/zepisexajanuzupefiwedito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5012/3932/files/vamu_ginjalu_in_english.pdfIn PDF document text
    • http://wunavoted.stonyhillfarmsonlinestore.square.site/uploads/1/3/1/4/131407370/89c05.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_off0000b399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB399 5344 bytes
SHA-256: 1f00e0f7bfce71b5604f37ac7065234b2889ce858bd27d6888051f865b8ff63a
font_01_sfnt_off0000c594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC594 10272 bytes
SHA-256: 5523e133156aa4f964c02b55a34733930f65bde4f8198f7bfd85a045269928c2

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