Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb75e63a4afc02d3…

MALICIOUS

PDF

44.3 KB Created: 2020-08-20 05:48:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c524ef304e7a66f3e7cabf0cba7e7ac SHA-1: 66dd244e697b54071b5f63b613268d3fcd6deaec SHA-256: bb75e63a4afc02d3620d1cbfdbff2f6987c706a30e7cfb13df0cee26abb49864
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure for an advance-fee scam, specifically mentioning a voucher and prize, which is a common tactic for financial fraud. It embeds numerous links, including one to a known malicious redirector at 'ttraff.com'. This redirector is likely used to obscure the final destination and potentially track victims. The document body, though heavily obfuscated, contains the text 'Good food guide voucher brisbane' and the malicious URL, reinforcing the lure. The presence of a link farm suggests an attempt to game search engines or distribute the malicious content widely.

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=good+food+guide+voucher+brisbane In PDF document text
    • http://files.featherlegsoutdoors.com/uploads/1/3/1/4/131454549/vevazozovozu.pdfIn PDF document text
    • http://files.noparameters.org/uploads/1/3/2/7/132740413/bipofikelate.pdfIn PDF document text
    • http://files.flcprinceton.org/uploads/1/3/0/9/130969761/7835a.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/1/0430/8402/1921/files/jan_cartoon_games_free_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/4531/8819/files/calidad_de_vida_en_el_trabajo_en_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/anatomy_of_fetal_skull.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/kusiripovebawigamujidawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0020/9319/files/ramexewekolajoxunupedewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/71813731910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1827/2417/files/56056961834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4487/6966/files/amazon_web_services_case_study.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2521/1298/files/18293239851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2500557594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/xenenakanojedelojig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2040/2337/files/miwogavof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/paradise_4eva_ls.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3331/8808/files/the_maze_of_bones.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_off00006b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B53 5484 bytes
SHA-256: d69e0638dc7e68efa2ddf3c1ab48061325b3ed6fccf8b212036874688f53fe13
font_01_sfnt_off00007dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFD 11184 bytes
SHA-256: 6bcaebd7eef9f61e9729ea7775dd6abe49e2b16d36c88737b31e3f563fd9f4d0