Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7535a192e904be1…

MALICIOUS

PDF

33.2 KB Created: 2020-08-05 03:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 241aa4b79884acc86307e2330a67d622 SHA-1: 3e9439d2532ed6ac6b4a648288469aa5767dcad0 SHA-256: d7535a192e904be195c50497938f511c606f8ae3454d5534e5b967e1d507263c
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This URL is embedded within the document body, disguised as a link to download a book. The PDF also contains a mass external PDF link farm, suggesting an attempt to manipulate search engine results or distribute multiple malicious links. The ML classifier strongly indicates maliciousness.

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.cc/pify?keyword=principles+of+agronomy+by+yellamanda+reddy+pdf+download+free In PDF document text
    • http://files.mtstv.org/uploads/1/3/2/6/132682204/radezalefe_gasanasedepij_jagowexeruteka.pdfIn PDF document text
    • http://files.tuslawjba.com/uploads/1/3/1/8/131871814/6916851.pdfIn PDF document text
    • http://files.mackeiganmarketing.com/uploads/1/3/1/4/131453459/eb92424.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/1/0428/3544/3871/files/33844710595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9127/0563/files/zitopuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1030/9787/files/24994238475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3182/1468/files/tchaikovsky_june_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/download_cuda_9._0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9340/9438/files/gobamomuwizudoxejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/20919000064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8514/3965/files/92356462721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6913/6284/files/zubipemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/virtualbox_mount_shared_folder_ubuntu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/56835537155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/92659923226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7663/3247/files/77284309812.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 2

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_off0000440e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x440E 5808 bytes
SHA-256: 1f1aa624d39f3e3278c2b2a1da14dd6e1acbb1d2ed0d33596f28df88ac932d9f
font_01_sfnt_off000057cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57CD 8812 bytes
SHA-256: ae0d11371d3024955bfc46a60f4afb2c3e3efb57d9e308eb844d8704c70e0e0e

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