Malicious PDF — malware analysis report

Static analysis result for SHA-256 497af62c66ca8281…

MALICIOUS

PDF

39.8 KB Created: 2020-08-18 22:03:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe86b9f77a953796aa5e38e48c46a341 SHA-1: 8f63d7803485d3dec80dea1fa8c80295f6b9a25f SHA-256: 497af62c66ca8281fd11dca79fed0b6846d53bd702a0402d6c68701af54ce7b9
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a PDF link farm. One of these links, 'https://ttraff.com/pify?keyword=alt+j+taro+free', points to a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is a primary lure. The presence of numerous links, many hosted on seemingly benign platforms like Shopify but pointing to potentially malicious content, indicates a strategy to distribute malicious payloads or conduct phishing attacks.

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=alt+j+taro+free In PDF document text
    • http://reboken.100x35online.com/uploads/1/3/0/8/130874250/dirasatekalu.pdfIn PDF document text
    • http://files.evangelismfireministries.com/uploads/1/3/1/8/131858791/9106861.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/1/0430/9434/3841/files/sivodolajurix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/4163/0882/files/70168328787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/xonaxewevizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4202/8182/files/proper_business_letter_format_with_cc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7789/4293/files/16913998739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8484/1124/files/jurowotoxugagoboruxagedil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5496/3617/files/86725435648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9212/3553/files/income_tax_calculation_statement_form_2020_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7031/4903/files/dragon_s_dogma_snakeskin_purse.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_off00005ff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF3 4648 bytes
SHA-256: 154feb63189c3bd52c3ffa84a5859e7fb24db1a24194bbb630d312db90958d01
font_01_sfnt_off00006fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCD 10404 bytes
SHA-256: 7f64663e8b355c19f1d6a23357a4183a1f46ed48990aa501ce102b39ea2d737c

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