Malicious PDF — malware analysis report

Static analysis result for SHA-256 0020e24b323dd689…

MALICIOUS

PDF

91.6 KB Created: 2020-10-29 12:52:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d55a60e509aaddde52d08f05b45cdc62 SHA-1: 20c78d61b327c556a601b7b041594ac321621c50 SHA-256: 0020e24b323dd689ae5596606c60ab95a30157af6793b1661795029a5a98b595
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous external links, many pointing to benign PDFs, suggests a link farm or SEO poisoning tactic to improve the ranking of the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/strik?keyword=fuenteovejuna+lope+de+vega+personajes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416504/normal_5f94b68be0fb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414866/normal_5f9476b31c881.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_5f87510ca9661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377388/normal_5f9a86cdad1d2.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/7aecd0db-056b-48b6-bc93-477609730de4/wivujuxudujobimek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8755/3213/files/law_of_property_act1925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4041/4133/files/11071217346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6613/6989/files/kirby_carpet_cleaner_instruction_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3734/2882/files/atomic_habits_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7940/4194/files/jowubidowanamuzipadegiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7944/3639/files/jekotibapotod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0e0039f-51c3-4115-af35-de10f326476a/sagomutiruxamadagef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0718/9407/files/12159695171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/2166/9816/files/tnusrb_taluk_si_syllabus_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/682deebc-bb09-42b1-be2f-9feb1929566d/18201609656.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/413cbfe9-92a1-4a7f-924d-162103d00915/66276485241.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/amsden_duets_bass_clef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8434/1950/files/bejelubinixovodogazenali.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f39693a-dec8-4fe5-a980-7924d6e2dc67/54148690041.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/farabamidexutaluxudukur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35ff50f2-4162-486e-a767-3e4961bcc4bb/anthropomorphic_stele_material.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 3

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_off0001297d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1297D 5216 bytes
SHA-256: 8d1f1ecea00bb2d4293823f001dee1d9032c75d969d9ae4e649f570ccf03d125
font_01_sfnt_off00013b60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B60 11432 bytes
SHA-256: ae3d7c701461eaa32e6041d1e014eb581f90e78060f61862f310a34263643134

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