Malicious PDF — malware analysis report

Static analysis result for SHA-256 e73a0c0ead5419d4…

MALICIOUS

PDF

60.5 KB Created: 2020-10-11 00:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 8504c252c0a7683613cff228c2a2176d SHA-1: 53dcdfed1090815e8d15941b68964eea0d3e4514 SHA-256: e73a0c0ead5419d4a4edc1c0e163c4131c5c5d20b71f65d4fa0b5ff43767fd5f
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/pify?keyword=jury+summons+sent+to+old+address In PDF document text
    • http://nufubima.allurebundlesandmore.com/uploads/1/3/1/4/131437822/sopigijepav_venenusenedami_lamilav_lefezolaxew.pdfIn PDF document text
    • http://nofafisi.countertruths.com/uploads/1/3/0/7/130776428/petevirugukuri.pdfIn PDF document text
    • http://files.osinttechniques.com/uploads/1/3/2/7/132710763/lunemowuvipovajiz.pdfIn PDF document text
    • http://files.zo-axus.com/uploads/1/3/1/6/131606362/zofaxinav.pdfIn PDF document text
    • http://files.cristenbopp.com/uploads/1/3/0/7/130776208/f3775a.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/1/0431/2937/2836/files/le_parfait_jars_vs_weck.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2845/3288/files/47835539035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8371/0117/files/68996440569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3427/4723/files/4184017519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4400/6819/files/talking_tom_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd86df67-419b-43b8-bec3-231ad4a1032f/sovegakoruxevorigo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b61629f-aef9-4a41-9700-aba5fcb329a1/boliwutolezisibiwelabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac3d7b69-f0af-48ab-b846-558ff275114e/newenibesoxapafumegamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f29df71b-2da6-46b9-805e-4a674bfbdab3/pasilizidazosozelavapa.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 4

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_off0000af84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF84 5060 bytes
SHA-256: 48d138fc20cba3742ecefcbbd287276604c4a80dde3a5778f1b77cacc2ee7e3e
font_01_sfnt_off0000c0a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0A9 10580 bytes
SHA-256: 3081514762cd81778cf6f33097d0f3d3453320730c722aeef0f2693d8f14dac3

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