Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5152f616d22979e…

MALICIOUS

PDF

36.3 KB Created: 2020-10-05 16:38:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: dec7e8d6909fc60f7071a8b4148d338f SHA-1: 2f61a27dc8fef2f53361f4edad3b1e2c593734dd SHA-256: d5152f616d22979e389dbceddf31669252e7cf6e5ab05d84395713b95da59bb1
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.link/pify?keyword=cuisinart+frozen+yogurt+ice+cream+maker+recipes In PDF document text
    • http://givexek.jameshynes.com/uploads/1/3/2/7/132740435/damaxajikafo.pdfIn PDF document text
    • http://nezazoxu.naobidetroit.org/uploads/1/3/1/4/131406695/zagexizuzezola_nemaruvuxazi_zapoka_bakaxux.pdfIn PDF document text
    • http://files.gabbyspetsitting.com/uploads/1/3/1/0/131070718/9400702.pdfIn PDF document text
    • http://files.21tarabrooklyn.com/uploads/1/3/1/6/131606636/sogifufox.pdfIn PDF document text
    • http://files.dirtybootsproject.com/uploads/1/3/2/6/132681476/sogigi_jogixufejisu.pdfIn PDF document text
    • http://vutuba.royalmarineser.com/uploads/1/3/1/8/131871787/zamazarasa.pdfIn PDF document text
    • http://darinem.therapywithmimi.com/uploads/1/3/0/7/130775830/0204f039ea3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fba7fc15-8f4f-4b77-837b-e41776d4711e/37046541262.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ece65aa-ac1c-4902-acfb-0eca56e57ddf/safobugi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4205038-129b-4bbd-b129-0f9c09bb6ed9/22149460448.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1794f0a9-3079-4eea-98af-f9632a5407cf/lobokogoxefosusiwatesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3114/6908/files/62340038728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/3416/6694/files/gefojej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/ousd_calendar_2016-17.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_off00004f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F68 5424 bytes
SHA-256: 9a78492e0d1df9b132fe79caf60ecb79cfac6a42ea7bb3e2d2243ea09bd7804b
font_01_sfnt_off000061e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E5 10060 bytes
SHA-256: 3002809f953eb6ecb81cfe879ed3a1be61ea7430357a07eacc6ec62104e8fcac

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