Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c9d90abea8de17d…

MALICIOUS

PDF

109.4 KB Created: 2020-08-21 10:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4d41aa2ba116e28ef52ec5d52dfe52f SHA-1: 5f180d1d47de327f5fb3f24853a47ed884d11a6d SHA-256: 3c9d90abea8de17d943237173b4c712d6d197c1f0d626b6486aa5edd3740e600
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is likely used to redirect users to a malicious website. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, suggesting an attempt to manipulate search engine results or distribute content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=shin+chan+pictures In PDF document text
    • http://dovawij.elysianonearth.com/uploads/1/3/1/3/131383664/vulata.pdfIn PDF document text
    • http://files.benbloor.com/uploads/1/3/1/4/131483955/visujulorefu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9376/9894/files/behavioral_neuroscience_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4474/7929/files/xabobizojazaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7977/7952/files/xisijezir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3242/0262/files/sejogosewebobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8933/0325/files/titaxigagimamomop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4715/6903/files/agathiyar_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3359/8880/files/rozumuvapujokire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/gizosatuzitosabal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9336/0791/files/kapixafodulanuwadutof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0908/9434/files/tintin_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0100/1630/files/list_of_adjectives_and_their_synonyms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9607/0549/files/aadhar_card_download_without_mobile_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0311/7719/files/wokexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8679/0304/files/gitixilamapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1608/3877/files/82517061486.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
🗂 Part of campaign: benbloor.com 3 samples

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C7 20524 bytes
SHA-256: 21fc298548e9181f308b5c6243a515cd2210f88549ae9daddc1bba5142282ff7
font_01_sfnt_off00014848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14848 5092 bytes
SHA-256: f9c2e04aa74d0f483c0407faa20b65a4aa845d0a0eb9ca4ac5cf84a5282d316f
font_02_sfnt_off00015978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15978 7360 bytes
SHA-256: c0e59ea634cfd15da97054d551302dcf68e55905eaa0754e1bafb8c8f04e5bbc
font_03_sfnt_off00016dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DAD 19264 bytes
SHA-256: 7c4459610bc812c6c7f6b39c1bb76eb21ffc010908a462799838672caecfddf1