Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3fc8e9dff4b6dcd…

MALICIOUS

PDF

45.0 KB Created: 2020-08-05 22:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1c7f10bdb1bfc3011342c2ebd57042c SHA-1: e438aef588f31596dab1e3b2290d11e7d811765c SHA-256: a3fc8e9dff4b6dcdc3b53c5e8ae6f0b3afd6f4e12c0de5daa6088db7b08c04a7
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector at `https://ttraff.ru/pify?keyword=barbiturate+poisoning+pdf`. The document body, though obfuscated, also contains this URL, suggesting an attempt to lure the user to malicious infrastructure. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent, likely for phishing or malware distribution.

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=barbiturate+poisoning+pdf In PDF document text
    • http://files.msauveenglish.com/uploads/1/3/1/4/131437711/2201833.pdfIn PDF document text
    • http://files.motivelove.com/uploads/1/3/0/7/130776728/9627091.pdfIn PDF document text
    • http://files.saskatoonnutanalions.com/uploads/1/3/1/1/131164260/4256154.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/1/0431/7826/2689/files/luvusumigise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/faximom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5965/7374/files/dagavinodutedinokoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9275/3049/files/wadutiromufaruzixopej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0926/9156/files/dipafawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/kemarazamupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/vozoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/bibiboxogufudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5526/8519/files/geberaloriregap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/wuramanef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2515/4716/files/acrylics_for_beginners_the_essentials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/ludadijuzipimam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5823/files/tesexep.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 7

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_off00007222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7222 5368 bytes
SHA-256: 902a5ab7d3df2a03e9605cfaf19ad594177dfebbbef9108a28077796b689cd9e
font_01_sfnt_off0000846e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x846E 10212 bytes
SHA-256: c16545a51e01f8b92326da71bcee16e7c3ff860fb9dff70ec2cb1772b144760d

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