Malicious PDF — malware analysis report

Static analysis result for SHA-256 a18eda2a50edaba6…

MALICIOUS

PDF

40.7 KB Created: 2020-08-28 15:16:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b194933d06f84657943fd6ec67f0915 SHA-1: b3e665e13f929ec17c67ed7213c5357af956df92 SHA-256: a18eda2a50edaba6786e83a3fb573ab3424de8070355e0518c2cd9f51e2f66bd
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a high number of embedded links. One of these links, 'https://ttraff.com/pify?keyword=subaru+legacy+manual+transmission', points to a known malicious redirector. The document body contains obfuscated text and multiple URLs, including benign ones hosted on Shopify and potentially malicious ones on other domains, suggesting a link farm intended to lure users to 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=subaru+legacy+manual+transmission In PDF document text
    • http://kekix.bridlewiseridingacademy.com/uploads/1/3/0/7/130739777/seresulivodu-midupiwikujo.pdfIn PDF document text
    • http://files.silverstarcustomleather.com/uploads/1/3/0/8/130813888/bagemivorefebu.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/1/0440/1430/5430/files/alif_novel_episode_1_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/btet_question_paper_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/73082844974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1431/5422/files/sagivulawenidagetabunad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/8836/4956/files/rosary_for_the_dead.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6302/4542/files/53773074949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/93094771672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5612/8412/files/20483495831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5669/2390/files/zizadamovop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dosoxuwananeworatimuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3714/5753/files/los_siete_habitos_de_los_adolescentes_altamente_efectiva.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 1

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_off000060c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C7 5464 bytes
SHA-256: 87c847d4eb6909a7f72793ec0a79034713aed2c80084b603a75727278b312a22
font_01_sfnt_off0000734a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734A 10160 bytes
SHA-256: 19cd7dcf9b12a0780f5d0be912ca657c1405f2c397fc7a08520fd99498afee95

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