Malicious PDF — malware analysis report

Static analysis result for SHA-256 d09202a2ad2493c6…

MALICIOUS

PDF

48.3 KB Created: 2020-08-01 06:45:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bb6669370e833e29f3c2625281f0ab6d SHA-1: 0fbbb0aa2b95e40189eb48fcf9d26ab7068fabc2 SHA-256: d09202a2ad2493c64a8da28ef10d65953dea8aef45c3c7bbdaece9843e7dda88
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the string 'Downloading ios 8. 3' and the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier also strongly indicated maliciousness.

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=downloading+ios+8.+3 In PDF document text
    • http://files.aakashsinghrathore.com/uploads/1/3/0/7/130740205/ab1717c1e72.pdfIn PDF document text
    • http://files.paula-mcdermid.com/uploads/1/3/1/3/131380052/4634852.pdfIn PDF document text
    • http://files.evergreenhomeconcierge.com/uploads/1/3/0/8/130814513/lireruwipe.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/1/0428/9835/8432/files/gobobuxewinunegurugita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77603652905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8774/1599/files/doginixipalasekuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/pinuxigevigifosareroxaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7414/files/51084734309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8995/9843/files/kajububoruterutop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/tuzixil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/gumigonenazewumik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vevisip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2109/1484/files/kisorezikejowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vukabisozudetilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/wabozozefukazewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/34005552438.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A39 5376 bytes
SHA-256: a46e4505cadb1da2dae9214ff02233d4f87a94ec4985d306477156251558e928
font_01_sfnt_off00007cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB0 9968 bytes
SHA-256: b71e560bff37d649e9407352193a121c8a622061fb0be9260e059d870c3f57a5
font_02_sfnt_off00009ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EF8 16068 bytes
SHA-256: 5338b60dac2ddcc9fbf81734882903060897ff8c18563aad6864a581beec55c6