Malicious PDF — malware analysis report

Static analysis result for SHA-256 f758d8556661dbf0…

MALICIOUS

PDF

50.1 KB Created: 2020-08-30 06:02:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e1c8236b483d0221f5ef670e19145148 SHA-1: 7f9cec0d310b1ac5bc0772becfc57bae04682e51 SHA-256: f758d8556661dbf0b7624d180cb15d1e5f90e6dc548956a6e1e2886ba663281c
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains a high number of embedded links. One of these links, 'https://ttraff.cc/wix?keyword=curtis+dale+atwood+ii', points to a known malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify URLs, suggesting a link farm used to distribute 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.cc/wix?keyword=curtis+dale+atwood+ii In 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/1/0436/5543/0309/files/jurelawatet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5338/3833/files/imperative_form_of_essen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8638/8123/files/hornady_reloading_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/19422896697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/gta_vice_city_rar_ifresi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7865/4883/files/79776059138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4732/0728/files/wemon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/biology_dictionary_a_z.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4879/6309/files/53721306143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0316/files/tuvukinunuxizifilaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3276/3816/files/free_online_auction_flyer_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8380/9447/files/flex_box_froggy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4809/2323/files/lazirik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8818/3456/files/distinguish_between_descriptive_and_inferential_statistics.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F89 4816 bytes
SHA-256: 9483a7124acba450fb86dcb9edd311448df155ac4e1471e25c2c33d82a087952
font_01_sfnt_off00008004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8004 10864 bytes
SHA-256: b9db38f02cddb73469a43b78bc36d33418989191fbf8bf82a5ddd563f91c9899
font_02_sfnt_off0000a569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA569 16388 bytes
SHA-256: 9ce968684b619d72bf8d9e2c6ed94cc14e98eb9be949baaa74a707aa5265accb

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