Malicious PDF — malware analysis report

Static analysis result for SHA-256 99a046b2a3cb0aca…

MALICIOUS

PDF

40.5 KB Created: 2020-08-23 01:53:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de730d754e3088f0f37aef0cac74c2ba SHA-1: 4fcc426d471886cfe45a6c462c80533ad2fb3763 SHA-256: 99a046b2a3cb0aca32fc4aadd461f924672e7c1ae95162b0685753fd23a979a2
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 one pointing to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The document body contains garbled text but also includes the URL 'https://ttraff.ru/pify?keyword=strategy+games+android', which is identified as a malicious redirector. The presence of numerous external links suggests an attempt at SEO manipulation or a link farm 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.ru/pify?keyword=strategy+games+android In PDF document text
    • http://fokuwuwe.smokehousecanecorso.com/uploads/1/3/0/8/130814168/bigilus.pdfIn PDF document text
    • http://files.shopqal.com/uploads/1/3/0/8/130813732/445206.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/1/0437/7201/8845/files/18689670500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4870/4920/files/88720675346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8282/5382/files/dawemasisozipotoripo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5795/8299/files/wuwafamofemisariseforage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7514/0761/files/business_proposal_sample_for_food.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/biodegradation_of_xenobiotics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9914/2810/files/xezunuxisew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5783/9254/files/33438036009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/femikilikewopusawavosez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5861/6733/files/54311088521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/kiriselatetu.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_off000060a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A5 5316 bytes
SHA-256: 587d4592b38fb2264f5b764964ee7f29b99970864d13399e2e65c2d16fa8c83c
font_01_sfnt_off0000729f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x729F 10180 bytes
SHA-256: bbb161116015ed5d952e869aa728ce8727fad8b44a89078f679a939d53b93f92

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