Malicious PDF — malware analysis report

Static analysis result for SHA-256 57ea6dcdcd28714c…

MALICIOUS

PDF

66.4 KB Created: 2020-10-10 01:17:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 47aee4d32b34051de89795e119488956 SHA-1: 10872c8cc03d64baf9001c118677f846242bb9ee SHA-256: 57ea6dcdcd28714c9dacfecb822cf28ea87438715c294a72aac82cdb4b533146
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://ggtraff.ru/strik?keyword=kaspersky+keyboard+disable+mac In PDF document text
    • http://zuted.bathurst75fc.com.au/uploads/1/3/1/6/131637830/gaminamabineguzi.pdfIn PDF document text
    • http://zaduxi.budelttrip.com/uploads/1/3/0/8/130874278/fubol_novinur_povejeretab_pinajelene.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/1/0497/4811/5610/files/covet_fashion_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2488/7203/files/milpersman_1301_104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9794/7300/files/23062039856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9661/4068/files/geary_county_jail_inmates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8787/9587/files/theres_a_wocket_in_my_pocket_pages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9306/4870/files/gaziwosofuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8344/7966/files/zulisuviwotugajex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bd1878a-8200-4013-916a-f130de096ac0/71287037436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ab44ed4-b8ac-4e51-b5de-df1edd8de2d8/71800473733.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bde1fac2-17a0-4cef-b109-f7ce0bb0889f/xevikewifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9820599-8d05-4423-9857-b28c3c1eddca/41859160621.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a47e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA47E 5492 bytes
SHA-256: 3e5f71b6e20e525ce8851e0ab7d2330d6603dbd320486f3f1555d1dba2dd66df
font_01_sfnt_off0000b715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB715 2484 bytes
SHA-256: 8085e85f7ab2ec424f2d1e8603e5adaf13eeac0702cda241d6a7218dd8b8c71c
font_02_sfnt_off0000c1b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B7 10836 bytes
SHA-256: b6b29bbb6ca8b8946ec7cc33c42d95fc9e8f91dd3533bc935ef01afce4a91041
font_03_sfnt_off0000e6f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F6 16036 bytes
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940

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