Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6dbf2899ff2a5ab…

MALICIOUS

PDF

45.3 KB Created: 2020-08-14 16:47:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 229421a2e0a4809ea4eed5e491126aea SHA-1: 2f9d6cde1b297766d0c0af1b1532759d03ae7361 SHA-256: c6dbf2899ff2a5ab8173168924681158fe5e5b3cd625417a5b3468c90ac69ded
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=school+action+plan+template+pdf In PDF document text
    • http://files.shineonpro.com/uploads/1/3/1/4/131438330/bizobejogozikuzem.pdfIn PDF document text
    • http://files.carolslifeafterretirement.com/uploads/1/3/1/6/131608037/vimexerewexeb.pdfIn PDF document text
    • http://zojolazi.advisorybikelanes.com/uploads/1/3/0/8/130813612/73f405a81.pdfIn PDF document text
    • http://files.problemgambling.ie/uploads/1/3/1/4/131437567/ea1be8799.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/1/0437/0992/3481/files/23356352761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5207/1074/files/proteins_structure_and_function_david_whitford_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3124/8542/files/alter_ego_plus_b1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9390/7869/files/merriam_webster_s_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/xafekejofobigenudobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0819/5736/files/101_bodyweight_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6117/4684/files/fegijopalusepugezavolefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9993/1295/files/69602042665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7784/2582/files/22529673792.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_off000074dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74DC 5224 bytes
SHA-256: ce4644e476a1a2369127daaa471afaa693b79dacc7e7f7c559fae200627ee854
font_01_sfnt_off00008672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8672 10000 bytes
SHA-256: cd43909ddff1ea8bbea8536f21c838476ea320d566c035307d31027e5521dbe5

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