Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf913a5c01cf2061…

MALICIOUS

PDF

61.0 KB Created: 2020-11-06 12:04:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 5dc111db1e95a56ec4fe93b1faae9672 SHA-1: 1713060add815ce5918169dae3f3734a411a5d48 SHA-256: cf913a5c01cf20619cf4c9148533afd8b5107f1566ef9ea2305a63b3c5b86ee6
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://traffking.ru/strik?keyword=santo+rosario+domingo+nazaret In PDF document text
    • https://lonunibulitog.weebly.com/uploads/1/3/4/4/134498578/vasazamexabisar.pdfIn PDF document text
    • https://fitakizegeva.weebly.com/uploads/1/3/3/9/133999514/sizoluz.pdfIn PDF document text
    • https://wilujogid.weebly.com/uploads/1/3/4/3/134347442/ripoponefafoxipe.pdfIn PDF document text
    • https://taruzabob.weebly.com/uploads/1/3/4/4/134493447/jevol-zudulasarux.pdfIn PDF document text
    • https://matubupediguja.weebly.com/uploads/1/3/4/1/134131452/dowozo.pdfIn PDF document text
    • https://bilewobadazape.weebly.com/uploads/1/3/2/6/132695578/vozuwut-wumomomo.pdfIn PDF document text
    • https://dudererojafa.weebly.com/uploads/1/3/4/3/134362298/4972439.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0483/4685/7635/files/carnivores_ice_age_mod_apk_1.8.3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bbea170-6f6c-462a-9fed-b9f2cc7d117d/quikchange_lightning_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/pagedarebobamejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18d99e80-837d-4259-b9a3-43ccd24e03f0/rixujojokifugatiwofa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a01c55f7-9e3e-4f02-850e-2e470827d719/jenozewofipas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4947/4971/files/fahrenheit_451_character_analysis_worksheet.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8457 1572 bytes
SHA-256: e88443b14e86e4d13991448cb855da87db39bf6dffcfcd92cd5b657ce7a18dc3
font_01_sfnt_off00008c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5B 5052 bytes
SHA-256: a8efca589fadd3eb64f5d74f33ec7a978e2e136203173fe5ac2b208498bf06b7
font_02_sfnt_off00009d63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D63 11256 bytes
SHA-256: c25650c295975cdca099ba6791a2b1dcedb722a194da742b81b219925ba20370
font_03_sfnt_off0000c3a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3A9 16064 bytes
SHA-256: 6f17b99764d671a96c0d2fd0b5f339513c2ddbf7efa5d755f63b897ad21dd613
font_04_sfnt_off0000d837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD837 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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