Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc007304b856e7b5…

MALICIOUS

PDF

43.8 KB Created: 2020-09-04 23:58:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 014545764d6e4622b3cdfa8c36d1c1f2 SHA-1: b1234da55fc30eb4e559af23cb948fa3bb55f215 SHA-256: cc007304b856e7b58ed4fde888d52ede45950724c3f21c54b5e4e9e94d1007bf
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/wix?keyword=wow+classic+free+horde+leveling+guide In 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/1/0430/6396/7906/files/kakixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0331/3315/files/ac_dc_best_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7987/5225/files/apowersoft_video_capture_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1850/1799/files/xufafet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8392/1563/files/lixujomuriwot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5943/0047/files/42756824353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1668/2652/files/12321238384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/pojepatarenategenewixebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7659/7400/files/71404109061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/9511/3125/files/68863472735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5096/6950/files/bs_player_free_windows_7_softonic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0456/8252/4319/files/69236331328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/6271/5545/files/bhagavad_gita_quotes_in_tamil_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1358/6600/files/apprendre_l_arabe_pour_debutant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/punibulunevexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1714/2433/files/46075224020.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_off00006c48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C48 5448 bytes
SHA-256: 0e06ac64c1e9fbf5dedc60a24f69ab0e1f71f919e838db7bde820c1965114d2d
font_01_sfnt_off00007eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EED 10316 bytes
SHA-256: d8f952a25ce78aa92cd632245783936651da458faa6b23cde06f8b20bedd137b

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