Malicious PDF — malware analysis report

Static analysis result for SHA-256 25038ab35ca98c13…

MALICIOUS

PDF

60.1 KB Created: 2020-08-28 09:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5300c154a9a3814b950411a140ec1962 SHA-1: 0a14f5d5ac577ca665037788c7be4c215ec830ef SHA-256: 25038ab35ca98c1320d4d01e322416a1d016b287343f6b8b07694d95563aa94c
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, with one identified as a known malicious redirector. This suggests the document is designed to lure users to potentially harmful websites. The presence of numerous Shopify-hosted PDF links indicates a link farm strategy, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=%25D9%2585%25D8%25A7+%25D9%2587%25D9%2588+%25D8%25A7%25D9%2584%25D8%25AC%25D9%258A%25D9%2584%25D9%2588%25D9%2585%25D9%258A%25D8%25B1%25D8%25AA%25D9%2588%25D9%2584 In PDF document text
    • http://files.wchsmuseum.org/uploads/1/3/0/8/130874474/6563374.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3337/7440/files/91362702608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4388/0093/files/gotawexaxokokitanuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8064/6807/files/ramadan_2020_calendar_usa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/adobe_dc_pro_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7264/7331/files/lund_and_browder_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/tumobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8725/5970/files/nike_sb_tre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/76219825021.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00009bb6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9BB6 31364 bytes
SHA-256: 0907cf914cf538a7af16d989c492067e10dade05e668d9b25576466fc5f99419
font_00_sfnt_off00005c19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C19 3396 bytes
SHA-256: 39b723426ba3d8c138591a08cf7ac57ce1af2078f96d7f7cb3d2ce0498b9dbc4
font_01_sfnt_off00006721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6721 17344 bytes
SHA-256: 9fea9cd6ade43ccded1dfb96a1740257a7839395f8fe5e6a0d05c22969b9b483
font_02_sfnt_off000080be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80BE 7828 bytes
SHA-256: 2335ae04c10e220402452bd395811a9ce0eef1d5ba193f0d117f2f7d2863861b
font_04_sfnt_off0000d270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD270 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c