Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7770357649df504…

MALICIOUS

PDF

42.3 KB Created: 2020-10-16 09:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c13e5b4a55a220cce56765b62f98fc84 SHA-1: 6ab8ecb70faac9d49447f5531b1e18d0134fc74a SHA-256: d7770357649df504b83e9a7bce3ca6b0f51a0086d70ec6708c74a23e98167de1
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/123?keyword=scaricare+musica+da+spotify+gratis+android In PDF document text
    • https://ranerenonosojib.weebly.com/uploads/1/3/1/4/131483420/semomonelezuve.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/vunidixeviro_xitosujitupile_kadape.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/3c215e.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/jifijaju_mipevosisusol_mititetoluzik_levinoguvir.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/tedinoruline-luwukane-fidigu-xivukavikabikiv.pdfIn PDF document text
    • https://nafeziwubiwodi.weebly.com/uploads/1/3/1/3/131379183/dedatulepogid-wonexupesog-xabanararip.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/5840ac8ed9.pdfIn PDF document text
    • https://purolejomi.weebly.com/uploads/1/3/0/7/130776639/goxonel.pdfIn PDF document text
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/xusati.pdfIn PDF document text
    • https://dimejozetef.weebly.com/uploads/1/3/1/0/131070151/mitolowor.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/32e063a95e.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/80e56d498663.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371258/normal_5f888843aebd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f891d7b850d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370052/normal_5f88a80be11e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366014/normal_5f888d1961c3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367916/normal_5f87c1ceb6a0f.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/1/0492/2871/0041/files/59670285283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/7978/2566/files/banana_tree_for_sale_tampa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2612/8289/files/48689294880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/digimon_rearise_apk_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7276/5083/files/72411443476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8447/3007/files/unlock_for_editing_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8330/7445/files/23274821509.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6631 5648 bytes
SHA-256: 0fe707fe177b39f15c065b2c7f03018ce2b96aa613fd3a5fb86bb7ece8b8f474
font_01_sfnt_off00007952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7952 9828 bytes
SHA-256: bb078d4ebe6b8a8e4ef7eab7408dd4c5289b3f6508e68eb7396c7f1c94c55afe

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