Malicious PDF — malware analysis report

Static analysis result for SHA-256 d986cb6e0ed55e8d…

MALICIOUS

PDF

40.1 KB Created: 2020-08-19 09:33:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 827759d74ee6b00478cc00ecad3cfd79 SHA-1: 2e21b0933f0112d5d0fe4e6f09679d36b554221b SHA-256: d986cb6e0ed55e8d680a6bc7f94ca1044f2a56d0b629415d390bd34c5db65c33
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure (ttraff.com), which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to 'Cambridge english complete pet pdf' and includes the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm strategy, likely for SEO poisoning or to host further malicious content.

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=cambridge+english+complete+pet+pdf In PDF document text
    • http://fonaj.jessicaslaymakerart.com/uploads/1/3/0/8/130874276/poxotojijutadilawim.pdfIn PDF document text
    • http://files.sapbushfarmstore.com/uploads/1/3/0/7/130775635/7885752.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/1/0429/2077/1750/files/khasiat_belimbing_wuluh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9918/9402/files/perfect_attendance_certificate_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7739/2791/files/773627477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/vokiluzop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8395/4328/files/75481880075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/pacman_death_sound.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35022180152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0707/4719/files/manchester_united_vs_chelsea_match_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7235/5478/files/haloalkanes_haloarenes_ncert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8596/9046/files/21678903325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5320/3104/files/ramuleworoxiwaratipiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/lareribiramiridesegibejin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43106273748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3672/0798/files/27187883322.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 6

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_off00005eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB0 5612 bytes
SHA-256: 59da6f9e335661bc5a1d429b5749e4703e606e4273847edef23f2daa3c4629e8
font_01_sfnt_off00007195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7195 9980 bytes
SHA-256: 6545f1dee6822417163f38ce3d61dc0ff7cf1e0ea4f7470d4ebef5cada4ef89f

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