Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2daf60706f9dd17…

MALICIOUS

PDF

52.7 KB Created: 2020-10-15 09:16:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5ab1f7603ca43aacbe24be4c87ec6220 SHA-1: 64cdb5c03f58865328d9aabdcb501ade851fb2fd SHA-256: f2daf60706f9dd179d1a24302db6fe1372cf5ae9610ae0967b6116a84801a611
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/123?keyword=chapter+4+musculoskeletal+system+worksheet+4a+answers In PDF document text
    • https://pejapuvurexoku.weebly.com/uploads/1/3/1/6/131636728/0d9348d73889d98.pdfIn PDF document text
    • https://wesoxiworikezux.weebly.com/uploads/1/3/1/3/131380467/6256616.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/fizezaje_remixebuxu_vuvirogizagoful.pdfIn PDF document text
    • https://site-1039897.mozfiles.com/files/1039897/sajanunitanikelojetak.pdfIn PDF document text
    • https://site-1037882.mozfiles.com/files/1037882/261507513.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/1/0501/9815/1343/files/neuropatia_diabetica_fisiopatologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3771/5363/files/btd_5_hacked_unblocked_games_66.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6150/8256/files/modus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4178/2946/files/38991077437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e24f1d4c-94b2-442b-a3dd-5a42132e2390/42096994067.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/175cc653-c05f-4692-a2f2-4d0aef08b92f/bixumazojalojufasidevavi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61119861-4486-4b91-8c10-c947fd35dba8/pafozegunifanaretutatota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ec25b59-72fe-4b47-b594-c108b5290124/nepod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2871/6440/files/13530747223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9740/7126/files/syberia_apk_revdl.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 8

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_off00008e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E63 5424 bytes
SHA-256: d8222d1524118fa7bceb20e5459498d41830f04009e47a53dcbcfb95719a2971
font_01_sfnt_off0000a0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0D0 10852 bytes
SHA-256: 32df3a3cd32e1663f0b68b804c53235262092d90adcec3a53889a1ffe2cbea24

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