Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cbe8c05da2ede9c…

MALICIOUS

PDF

39.3 KB Created: 2020-08-04 21:26:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6f1f04cedd80cc2718eca4cff0a7a18 SHA-1: a9e5e5f1d5fe0928bd18b42cacf052ee915c77e2 SHA-256: 6cbe8c05da2ede9c8f5615901a0666b0fd652f9329b3afbcb9d9b5f1c4b06635
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure for free downloads. The primary redirector URL is identified as malicious. The document body, though heavily obfuscated, contains references to the malicious redirector and benign-looking PDF filenames, reinforcing the lure. No scripts were extracted, but the presence of embedded URLs and the PDF structure strongly indicate a phishing or scam attempt.

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=cannonball+adderley+omnibook+eb+pdf In PDF document text
    • http://files.knaylorpaintings.com/uploads/1/3/1/0/131070888/webupefusogabudolox.pdfIn PDF document text
    • http://files.mustardseedsgrow.com/uploads/1/3/1/4/131438847/160cf7f15a.pdfIn PDF document text
    • http://files.artbyjulieh.com/uploads/1/3/1/0/131070493/ccad03741.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/1/0433/7994/9718/files/topajegizakevadito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3331/2925/files/sunobufajawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6146/8574/files/71973045581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2478/5319/files/bar_keepers_friend_msds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5348/2135/files/caldwell_chronograph_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6807/0815/files/express_js_tutorial_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7730/2427/files/99165181636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9748/9561/files/69686867390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/numerical_methods_chapra_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5731/4977/files/91363267114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/97527408985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/windows_xp_tablet_pc_edition_iso.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9C 5220 bytes
SHA-256: ca0c048170c8fd0e94dd9b5a63e90ff71d0f10b090578680cf35015940218a49
font_01_sfnt_off00006c4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4D 10528 bytes
SHA-256: 0da33b1ecec7446a95840f329f70d38fdcf87078f1bab3bd79ae45ba9dfa35bb

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