Malicious PDF — malware analysis report

Static analysis result for SHA-256 40c9087248ac6f23…

MALICIOUS

PDF

48.3 KB Created: 2020-07-31 20:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b3c26c9ef501d0b91c63d6cef8f3732 SHA-1: e2251f6f74bb91e1f7b12a024cb75db0faa25703 SHA-256: 40c9087248ac6f2317264481cc042d3a4a636b4dcbca6b0cb2054941265e3e91
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=sister+souljah+a+deeper+love+inside+pdf'. Additionally, it features a large number of external PDF links, many of which are hosted on Shopify domains but some point to unknown domains. The document body contains garbled text but includes the malicious URL, suggesting a lure to trick users into clicking the link. No scripts were extracted from this sample.

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.cc/pify?keyword=sister+souljah+a+deeper+love+inside+pdf In PDF document text
    • http://files.confeybiol.com/uploads/1/3/1/3/131398187/1256364.pdfIn PDF document text
    • http://files.tuckahoemc.com/uploads/1/3/1/6/131606227/4643530.pdfIn PDF document text
    • http://files.keepingthefaithal.org/uploads/1/3/0/7/130775505/a84428c.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/1/0434/8579/0365/files/85283849500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7205/2634/files/vodikusulovazemofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1771/5361/files/60266605126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1596/8667/files/vonopok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1157/8776/files/82919154793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/jopubomoxakezawuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8013/9423/files/wotuxokubidotafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3111/7467/files/wikejibub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/kajib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/2312077498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/kewutilexuvup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/17938179839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zofes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5150/7094/files/faxefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7098/0245/files/3275414595.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_off00006947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6947 5368 bytes
SHA-256: 461baa28d0dcd0d885aa8381777b4c3f224df5023622d44ce792d825bea0eea3
font_01_sfnt_off00007b8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8D 10356 bytes
SHA-256: 20ff92a19865e53da4030005e32e6b2277e2abe9e714a0b32f3bd713195fbbe8
font_02_sfnt_off00009f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F24 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848