Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed26d24b919e34ed…

MALICIOUS

PDF

37.5 KB Created: 2020-10-07 18:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b5155cea433337e49494a9919608ff84 SHA-1: 6858594d2265db241d37a61e08a7cc8adae442d9 SHA-256: ed26d24b919e34edcaad93904da5327657c985e7347da13b89e18634b5374cc5
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://ttraff.com/pify?keyword=brian+greene+pdf In PDF document text
    • http://files.ronaldwallach.com/uploads/1/3/1/6/131606556/6512563.pdfIn PDF document text
    • http://files.thelaunchpad-al.com/uploads/1/3/2/3/132302963/zinukusubugapif_febepejopokefi_jebumix_nupog.pdfIn PDF document text
    • http://files.ktdarts.net/uploads/1/3/1/6/131606162/b4b2fcc.pdfIn PDF document text
    • https://site-1039505.mozfiles.com/files/1039505/51918868994.pdfIn PDF document text
    • https://site-1039668.mozfiles.com/files/1039668/pofodudavoporomax.pdfIn PDF document text
    • https://site-1036864.mozfiles.com/files/1036864/jopifulugafapijalez.pdfIn PDF document text
    • https://site-1039787.mozfiles.com/files/1039787/82482208119.pdfIn PDF document text
    • https://site-1042010.mozfiles.com/files/1042010/22269048854.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/1/0481/9350/3384/files/zf6_manual_transmission_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9583/4280/files/free_xbox_live_gold_codes_2020_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1214/8376/files/87525772513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6966/8517/files/the_haunted_band_t_shirt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0504/8994/files/93075828502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/3754/1798/files/wemo_3_way_switch_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2716/5092/files/pozoripovisexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/74780952094.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000545f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x545F 5048 bytes
SHA-256: 491fdda25f14575e2dab804181fd5073fa92dce9d5b08121e4db6cf0ae588f0a
font_01_sfnt_off000065a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A4 10620 bytes
SHA-256: fadd7fc628c5fae7f3c503997fe26966095b31d868feb1d98c41e2f02ec3e66c

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