Malicious PDF — malware analysis report

Static analysis result for SHA-256 11b05a4e6b4029a0…

MALICIOUS

PDF

41.6 KB Created: 2020-08-21 10:59:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d81865ee1dcd31ab5217b963d39d079 SHA-1: 83c65aeb96dcaf4f877b5001d33e6c09e158ae13 SHA-256: 11b05a4e6b4029a0116f10b9b19db363fa210e22934e385c84da6d26ded571bd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links pointing to a redirector service (ttraff.ru), which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL and numerous benign-looking PDF links hosted on Shopify, suggesting an attempt to disguise malicious activity within a link farm. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs points towards an attempt to redirect the user to a malicious site.

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.ru/pify?keyword=rooms+in+the+house+spanish+worksheet In PDF document text
    • http://files.highlevelstore.com/uploads/1/3/1/4/131452878/0efa88d83c439.pdfIn PDF document text
    • http://wipipa.universalwellnessaz.com/uploads/1/3/2/3/132302780/5609615.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/1/0432/2469/4942/files/doxujuduzukogis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8709/4177/files/toxevefijanuguwaduge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6350/9146/files/wizukipivunalibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5719/3895/files/40411005315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7317/4693/files/coulson_and_richardson_volume_2_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4986/1791/files/53016334625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/rasezabuset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/momuxukoras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1713/4502/files/food_and_beverage_vector_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2770/9597/files/mekafeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/wizodimigetelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7243/6889/files/xosadofeziwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0879/4525/files/zorejew.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 5

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_off000065e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E5 5192 bytes
SHA-256: 49781ed4f64ea7e870a33b23811fa9098d03207a5ed184038d9e4087f2b9aace
font_01_sfnt_off00007773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7773 10028 bytes
SHA-256: eb36d4e5f0a646c0b4ebc1f717a536acef281f60bf2c5256b3e5fb6198c1e18e

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