Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5eb49a274f5d8d7…

MALICIOUS

PDF

67.1 KB Created: 2020-10-25 12:08:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 30f87b492de556c18928c6d9a286acfb SHA-1: 3a92e38f596faa17ece4fdc85f501e850057c84c SHA-256: a5eb49a274f5d8d7074186fbb914d20c7f074980e4dd62d40ba25e3f1623b940
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.me/pify?keyword=training+manager+resume+pdf In PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/batunaxe-jinem.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/2289346.pdfIn PDF document text
    • https://vevejeda.weebly.com/uploads/1/3/0/7/130776099/1505682.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/vewafunenefop-saseguvad-bujutozigite-nibajusad.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/lakakuseromexo.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/2570590.pdfIn PDF document text
    • https://ligetivegivug.weebly.com/uploads/1/3/4/0/134041815/wirowavutibavo.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/1b48b.pdfIn PDF document text
    • https://foxagizak.weebly.com/uploads/1/3/4/3/134332010/5f8c0c11cca07.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/vupugove_jimaburivug_punibafoj_wuvimokitagal.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/wumokefate_pidabelif_dajidebitux.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000b067.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000b067.bin)
    • https://cdn.shopify.com/s/files/1/0499/9928/2336/files/fupejavuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9333/7281/files/67475888191.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/principles_of_behavioral_genetics.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/rofej.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/xajodevivewupunoz.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/xejovuxufusitasor.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 extracted file (font_00_sfnt_off0000b067.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000ea21.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000ea21.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB067 5280 bytes
SHA-256: bc901df8399f648694b80700fa51eb94a6c5df6ce8dc3d3d6a6f3ffff7c66a70
font_01_sfnt_off0000c23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC23B 11632 bytes
SHA-256: 4fc554c93952b6311e37d975cb12783edc74ef2a7ec2242c407a8dedd3ba9d64
font_02_sfnt_off0000ea21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA21 16100 bytes
SHA-256: b0627a486dcaeee434fe5ad07bf169d6615d29e40b70de469c6017e3e4f2a7cc