Malicious PDF — malware analysis report

Static analysis result for SHA-256 19a6b16bbd2c0fe4…

MALICIOUS

PDF

53.9 KB Created: 2020-10-03 14:58:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c44de3545304472840f391bf5c324be1 SHA-1: e903994e33f27e8f1f54ff778b958e93402ba031 SHA-256: 19a6b16bbd2c0fe432bcc83fe0098b6c1d8bd838874217a67a8bd2aaec875433
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=john+maxwell+leadershift In PDF document text
    • http://ponen.walnutgroveauction.com/uploads/1/3/0/7/130776702/bibegodopututelag.pdfIn PDF document text
    • http://files.vintageorders.com/uploads/1/3/0/8/130873737/kofanubam.pdfIn PDF document text
    • http://files.upwardfacinglife.com/uploads/1/3/1/4/131436971/velolerulamur_baxafijirun.pdfIn PDF document text
    • http://files.jeffjuddmusic.com/uploads/1/3/1/8/131856757/0937599ca.pdfIn PDF document text
    • https://site-1037906.mozfiles.com/files/1037906/zozapipisupopogig.pdfIn PDF document text
    • https://site-1037246.mozfiles.com/files/1037246/zogidapetufosorinamixojad.pdfIn PDF document text
    • https://site-1036731.mozfiles.com/files/1036731/43843864926.pdfIn PDF document text
    • https://site-1037193.mozfiles.com/files/1037193/dijuk.pdfIn PDF document text
    • https://site-1037237.mozfiles.com/files/1037237/jujulamudonevizemadaduli.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/1/0484/1979/9198/files/ecc_2020_entrance_exam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2987/2292/files/alimony_vs_child_support_tax_deduction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8624/4757/files/duik_bassel_2_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8793/6150/files/arcade_games_apk_pure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aefe303a-8baa-4119-94fb-4f5071365429/punaforasewukapedigevera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44748a42-1611-40af-9ece-e292d379ba26/fetomuzesavuwamek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44291cc9-6016-424f-ab7a-d7bd3c06e8b4/bufaxiwuragadi.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000832a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x832A 6548 bytes
SHA-256: 0b1dc5b4f573a69b9afaf6921dac0d317c9c89d55a369f9988057ef6dc1e612c
font_01_sfnt_off0000937f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x937F 5296 bytes
SHA-256: 25be4d51de31cc186691be028d33d7a584617228092703764805316e87129294
font_02_sfnt_off0000a562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA562 10436 bytes
SHA-256: 8252cc30fed8d5f4af9036f8529185fe34c5f21697def099c3de79b2554f4439

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