Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5dcc87977b74865…

MALICIOUS

PDF

136.9 KB Created: 2020-08-02 23:31:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1abd8e8be3076ce2a41848367fbed023 SHA-1: 1d0742e55bbbd350104100e8c9de60453d2ff02e SHA-256: d5dcc87977b748655bbf9879ee973f444aa871c05dcd4c4d135958a9667750ac
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 'https://ttraff.ru/pify?keyword=javascript+transpose+array'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the same redirect URL, suggesting it's the primary lure.

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.ru/pify?keyword=javascript+transpose+array In PDF document text
    • http://files.noelanipta.org/uploads/1/3/1/4/131453817/mubevaxetasa.pdfIn PDF document text
    • http://files.casaesperanzalongmont.org/uploads/1/3/1/4/131436981/nupod.pdfIn PDF document text
    • http://files.personalspaceproject.com/uploads/1/3/2/7/132740343/piwepapefa-kavijabojexopi-fuwuwumewa.pdfIn PDF document text
    • http://files.southernmiddlemusic.com/uploads/1/3/2/6/132695932/f457220f3dafb1.pdfIn PDF document text
    • http://files.neststylingyourspace.com/uploads/1/3/0/8/130814297/dafifoxogemori.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/1/0427/9946/4611/files/muwuzuguxisozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1951/5557/files/18964909455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9561/1805/files/31100389834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/musuvagexas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/93150988377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3658/9730/files/81188805481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/muroxibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0953/2323/files/81647130303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/75512266249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/rasewisixe.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A685 5044 bytes
SHA-256: ebe2343d6884a6d61daa65b468889309f31a0a68da5e13db2ba58bec97dc8640
font_01_sfnt_off0001b792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B792 6316 bytes
SHA-256: e8c831eadfece1cbe7482033418ffd52d06a5a6e542c60bc3497ef61b70d0610
font_02_sfnt_off0001c716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C716 17680 bytes
SHA-256: 986edda4713244fd0360c779994cb5781565c5b28aa46fc8ef99d65ceda30204
font_03_sfnt_off0001fe56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FE56 16568 bytes
SHA-256: 2fbf25d6468cd9594753bb460ed9ddbb3bbcee88d7f8d15dda8e074748652f48