Malicious PDF — malware analysis report

Static analysis result for SHA-256 46d80043d64fba8c…

MALICIOUS

PDF

42.8 KB Created: 2020-10-04 08:07:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2a1f8698b3a21d93650814a67de7c529 SHA-1: f0912bf2ac3f8fc1037db33e99c6066d901aba88 SHA-256: 46d80043d64fba8c5dd6ab100e85b3493cd06fd6bb740d6b3cb194f845498422
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=el+pensamiento+lateral+edward+de+bono+pdf In PDF document text
    • http://files.emilybmartin.net/uploads/1/3/1/4/131453945/cbb67d30f7f.pdfIn PDF document text
    • http://demigo.laanimal.com/uploads/1/3/0/8/130874175/ad41e3ab.pdfIn PDF document text
    • http://tasiguw.goldenstatesurrogacy.com/uploads/1/3/1/8/131871816/satedok_nudafopebadojoj_kizepo.pdfIn PDF document text
    • http://files.clockworkpositive.com/uploads/1/3/1/8/131857562/difonup_zujigebajete_peget.pdfIn PDF document text
    • https://site-1041765.mozfiles.com/files/1041765/zarisi.pdfIn PDF document text
    • https://site-1037141.mozfiles.com/files/1037141/71136221784.pdfIn PDF document text
    • https://site-1036678.mozfiles.com/files/1036678/xoxufefuzimipiripifo.pdfIn PDF document text
    • https://site-1038699.mozfiles.com/files/1038699/dogerituripuwobixaf.pdfIn PDF document text
    • https://site-1036886.mozfiles.com/files/1036886/sutadabexeku.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/1/0476/5607/5430/files/24777921818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6933/6473/files/misakonafutofovexosux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/10055418321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6946/2935/files/gudetir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4102/1349/files/drunken_wrestlers_hacked.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_off00006677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6677 5376 bytes
SHA-256: 7fec96976c3e4de6eb004f0ed7b050486638da240c65b56d5a867a5392e97086
font_01_sfnt_off000078b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B3 11048 bytes
SHA-256: dbf83a583b1cc4ae5f1f314c2a89bed00d0f9b40d8f893d8e34cf57efc7d9199