Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c8424cfb857529…

MALICIOUS

PDF

35.6 KB Created: 2020-10-06 23:27:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: da2f4b589014dea2d42ac5060a4756e7 SHA-1: 878deb8ca30dee7c342a87b200756422a9467e14 SHA-256: f0c8424cfb8575298624a24fdebda0d6a747f9df6ce01dadcf90e1ea0dc7d4bf
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=adobe+indesign+cc+classroom+in+a+book+2020+release+pdf In PDF document text
    • http://files.northwestdogretreat.com/uploads/1/3/0/9/130969279/rewud-badopisavudo-ruliretazanisas.pdfIn PDF document text
    • http://lolezegi.southpawanimalhospital.com/uploads/1/3/1/4/131482975/5b7805c.pdfIn PDF document text
    • http://files.cavecastlegolfclub.co.uk/uploads/1/3/1/4/131453267/2326447.pdfIn PDF document text
    • http://tizusi.thinknwonder.org/uploads/1/3/1/3/131380065/fidimepovidominoni.pdfIn PDF document text
    • http://dajinikej.soaringwingsministries.org/uploads/1/3/2/6/132681865/4874908.pdfIn PDF document text
    • http://zowasugi.busybeesclifford.com/uploads/1/3/1/6/131636825/6321342.pdfIn PDF document text
    • http://files.yummycrabrestaurant.com/uploads/1/3/0/9/130969446/jifune.pdfIn PDF document text
    • http://files.lakeeffectclarinetquartet.com/uploads/1/3/1/3/131382536/1512684.pdfIn PDF document text
    • http://savupozas.poeticexpressionsforyou.com/uploads/1/3/0/7/130740235/lemijad_jojimela_mowefeb.pdfIn PDF document text
    • http://files.thewallsinnorthernireland.com/uploads/1/3/2/7/132712325/586246.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6698/2041/files/46550298733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8197/4169/files/uf_student_gardens.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8116/3157/files/hermit_crab_out_of_shell_and_buried.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5125/9803/files/special_lines_in_triangles_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6225/3975/files/powabuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7095/5424/files/wii_backup_launcher_black_screen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2490/0515/files/poe_move_elder_influence.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 8

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_off00004a5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A5E 5944 bytes
SHA-256: 7b2b36b19ff900c8966d2349c6af93477cd150c4fb9d8fe59ec21cea837f77e2
font_01_sfnt_off00005e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E86 10168 bytes
SHA-256: 8648cb97f1ed4e4bb340d59b710083d4e2339cea9cb6d88126bed8658a77c561

Open this report in the interactive analyzer, or submit your own file for analysis.