Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcf489c832889465…

MALICIOUS

PDF

42.7 KB Created: 2020-10-04 16:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7996bd5ed1a877fccfbcdf57abaebef2 SHA-1: 6ce21c261e049477523185d52cc1249c01ea6352 SHA-256: fcf489c832889465353ac766895961eee22e6fb8062b5081df671beb9e306653
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://cctraff.ru/strik?keyword=unity+5+fps+tutorial+pdf In PDF document text
    • https://site-1038397.mozfiles.com/files/1038397/serilixedefewujul.pdfIn PDF document text
    • http://zamexi.partnerhc.com/uploads/1/3/0/7/130775350/ritobarox_namokedor_bobigepe_gezoromol.pdfIn PDF document text
    • http://wizuxali.heartstarttrainingny.com/uploads/1/3/1/6/131637175/rekarapo_xemilumoxuv.pdfIn PDF document text
    • http://lagoxeju.apostrophe1.com.au/uploads/1/3/1/4/131438216/62aa9f.pdfIn PDF document text
    • http://jepizeda.travelinandersons.com/uploads/1/3/1/4/131406121/nemalizitasem_tivimamusowa.pdfIn PDF document text
    • http://files.sevenoakshouse.ca/uploads/1/3/0/7/130775529/fenetejosupugi.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/1/0488/5574/4668/files/graphing_radical_functions_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/selberg_proof_prime_number_theorem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0882/9851/files/pathoma_2015_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0817/2447/files/5942678149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3759/7591/files/mogejulerikupagigizopun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4241/4492/files/kevapimufip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5605/6488/files/84097143633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3668/0098/files/mefikuzesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6021/9042/files/what_is_a_sub_referral_source_meaning.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 3

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_off0000698f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x698F 5252 bytes
SHA-256: 6e3996f51c454f17f854e9b63ff75867b33787d4ee31c34432e3724b97b8017e
font_01_sfnt_off00007b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8F 10024 bytes
SHA-256: 5c102b551e28bdf12444a95aa02e12b3c508375841c366dbc209fb54f175cab8

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