Malicious PDF — malware analysis report

Static analysis result for SHA-256 71c098060e0d0b54…

MALICIOUS

PDF

52.2 KB Created: 2020-10-06 19:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 420c49da68df4e985b6071d5807bd68b SHA-1: c710fb92220c3ac0cfc5a30ddc940f223dc1e7ef SHA-256: 71c098060e0d0b54fe7f132bf7b056487aae424f6c7890b81a2dcdbb11370a38
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://gettraff.ru/pify?keyword=scouter+dbz+team+training In PDF document text
    • https://site-1036693.mozfiles.com/files/1036693/lidesetenivopesubopamiruf.pdfIn PDF document text
    • https://site-1036973.mozfiles.com/files/1036973/rexekoxufifuxenuxoko.pdfIn PDF document text
    • https://site-1036987.mozfiles.com/files/1036987/zipelujemosasesajinud.pdfIn PDF document text
    • https://site-1039817.mozfiles.com/files/1039817/vekexoxij.pdfIn PDF document text
    • https://site-1037079.mozfiles.com/files/1037079/sabomubukinajefaduduterux.pdfIn PDF document text
    • http://files.amsphotographyllc.net/uploads/1/3/1/3/131384589/5c1d0dc0edb474.pdfIn PDF document text
    • http://files.lauraberry.co.uk/uploads/1/3/1/6/131606208/204713.pdfIn PDF document text
    • http://files.friendssfpl.org/uploads/1/3/2/6/132695388/3196584.pdfIn PDF document text
    • http://files.stjohnsatlanta.org/uploads/1/3/1/6/131637104/bojovolifagif.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/1/0467/7468/1753/files/88052098517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5979/2022/files/soul_soap_pathfinder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6997/5965/files/61210613608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1740/3559/files/kick_return_madden_20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2806/5689/files/nuwujegunuwatosofaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/how_to_make_a_wither_storm_in_minecraft_pe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0334/7098/files/bill_cosby_fun_time_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/8824/9757/files/xezavexujakufexuxa.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_off00008087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8087 5224 bytes
SHA-256: 755b4475d4b6e6841471aff917e3c98a393f6e161e48fba7bdb5f1e2632b0c85
font_01_sfnt_off00009229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9229 10308 bytes
SHA-256: 83d39ccd4cd940cf31ee35a7fc334dca03fc90b9cd1cd041152d7d489f8a249f
font_02_sfnt_off0000b569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB569 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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