Malicious PDF — malware analysis report

Static analysis result for SHA-256 78f8fbde78d58d02…

MALICIOUS

PDF

50.0 KB Created: 2020-10-15 10:54:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 621a0311af3a8161349d53d85840b449 SHA-1: 6a2afba75e46e8e9c5cb22bb8c8c2435269778b0 SHA-256: 78f8fbde78d58d02a953ee3794773fa41795c60cee4a307d6571769ab11a6f85
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://ttraff.club/pify?keyword=premium+shopping+guide+dr+bair In PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/jokixigaxajax.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/ff06dfdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f87336511c98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f87b412406eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f86f4371c5ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369160/normal_5f87a2f872f47.pdfIn PDF document text
    • https://site-1039896.mozfiles.com/files/1039896/38759092136.pdfIn PDF document text
    • https://site-1044236.mozfiles.com/files/1044236/17176640330.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2191/7086/files/65411490794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7921/4265/files/giro_empire_vr90_shoe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/route_reflector_cisco.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5960/1830/files/ft-857d_hidden_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3669/6995/files/ginova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6784/1439/files/xuzusakufarawan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0929/7560/files/63647443874.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c7afcee-ef69-4f5c-a8e2-ebdacbc77ed7/28221664424.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7799a322-c9e6-4642-ac16-a8a4112c7338/xedapusemeviru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dccd640f-f1e9-4245-bf59-c1ae9c588e2b/vumefubamalal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7879 5284 bytes
SHA-256: caac24d4b56e5c8d6c8ea062173bf15b027b7073abdd4ad604417a0edd9ec69c
font_01_sfnt_off00008a29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A29 10260 bytes
SHA-256: 4fdb785583e43486f097b0c0136c0a9b4a315f33ca9886b83fef43f25e61f0c9
font_02_sfnt_off0000acfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACFA 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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