Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ca550e1515db02…

MALICIOUS

PDF

46.0 KB Created: 2020-10-14 18:18:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9c271715c6f071e0b2321f1d50f71daf SHA-1: a65f4b00fa756e31c4864b7b896b744481540093 SHA-256: f5ca550e1515db027458f2feeb18b3c0a0a1a8af7a5f88182fa7bfe8587137af
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://ggtraff.ru/pify?keyword=change+bottom+navigation+bar+color+android In PDF document text
    • https://site-1039848.mozfiles.com/files/1039848/79487811164.pdfIn PDF document text
    • https://site-1040363.mozfiles.com/files/1040363/lamasisaketidazagufef.pdfIn PDF document text
    • https://site-1040396.mozfiles.com/files/1040396/fuwij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f87025b3fc91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f86f3fd8c3bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365549/normal_5f870a2444e1e.pdfIn PDF document text
    • https://site-1040771.mozfiles.com/files/1040771/55204544912.pdfIn PDF document text
    • https://site-1042442.mozfiles.com/files/1042442/jizotofifafaxex.pdfIn PDF document text
    • https://site-1037829.mozfiles.com/files/1037829/gisavufeluwonofajozul.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/digokasawuj-jipamuputevuf.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/beparinunij.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/tidivobinimigip-banez-batipafon.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://uploads.strikinglycdn.com/files/1b2021d1-38df-4ca1-9475-371b8d6a4010/dijupelikijipeguxorav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/689370df-82b5-4cf2-9196-bc41cc17f056/komesilarux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c3aadfb-e9e1-4dee-9ca5-9feb122e1d27/bajodegozir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ba8423b-737c-40e2-8ea1-d8d61e116df9/rurijojefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7842/6007/files/sobigumopizotal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/naming_type_1_binary_ionic_compound.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6866 5188 bytes
SHA-256: 3ed285cf8838e0fa1f6f1b565b1d1f05e269533f1e726408e3e0e49254fbc4fd
font_01_sfnt_off000079db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79DB 10272 bytes
SHA-256: c31caf7c4f4a94e05e2ee56910bf604d8fec0056a4d10fdc4031bcfc0ab8bae8
font_02_sfnt_off00009cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB5 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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