Malicious PDF — malware analysis report

Static analysis result for SHA-256 c11b7664500ff9b3…

MALICIOUS

PDF

43.0 KB Created: 2020-10-06 11:38:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 35fd3400037d32d894ae1f1b03879c79 SHA-1: dd44fdbc36e2b49ec8da4900b8f2cc8a326e01ad SHA-256: c11b7664500ff9b38d62bc7475e49d208fb4c082864fffd7022b81485216e949
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://gettraff.ru/pify?keyword=how+to+make+a+movie+trailer+on+imovie In PDF document text
    • http://files.themissionhallproject.ca/uploads/1/3/0/8/130814058/sosur_bamugi_folazabipo_mubuzevakikiwex.pdfIn PDF document text
    • http://files.tjplumbingsuppliesservicellc.com/uploads/1/3/0/8/130814353/9811003.pdfIn PDF document text
    • http://defuna.pamelacaves.com/uploads/1/3/1/4/131409310/vanudazidodadir_bopusi_posim_rifanigi.pdfIn PDF document text
    • http://files.sundancehalters.com/uploads/1/3/1/3/131378838/dadinijutom.pdfIn PDF document text
    • http://files.forstinn.com/uploads/1/3/2/3/132303035/5962042.pdfIn PDF document text
    • http://files.cchsapexams.com/uploads/1/3/1/4/131437378/kegibumebawubup_dimik_xakasajajotew_xugiwujebuf.pdfIn PDF document text
    • http://kudonete.annelisestenseth.com/uploads/1/3/1/3/131378985/fikaboxif-wizode-fadij.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://cdn.shopify.com/s/files/1/0432/5641/4363/files/4849421582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0060/1504/files/hri_2020_registration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8363/1266/files/blue_exorcist_yukio_and_shiemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0631/5674/files/34769546146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/types_of_cirriculum.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_off00005fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCF 4616 bytes
SHA-256: 7cca708b574ea5b714083470d351f314dfe565704b44889dba7710a795b32aae
font_01_sfnt_off00006f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F67 9960 bytes
SHA-256: b410be18630aabc882112e8159e5e2d634e8be3b23db156da1a77c310e7bc62c
font_02_sfnt_off00009128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9128 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e