Malicious PDF — malware analysis report

Static analysis result for SHA-256 901579542e59ccdc…

MALICIOUS

PDF

49.0 KB Created: 2020-08-05 15:47:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a4ce4600a88cb5085a40956dc077933 SHA-1: b59cb0c44a7146289e77cfbc5293c30edb95489c SHA-256: 901579542e59ccdc902217feedbb9430bd7b44435264a0de3398b9d681514334
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, specifically pointing to 'https://ttraff.ru/pify?keyword=stigma+definition+psychology+pdf'. This indicates a social engineering attempt to direct users to malicious infrastructure. The document also contains a large number of embedded links, many of which point to potentially untrusted domains, suggesting a link farm or distribution mechanism for further malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

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=stigma+definition+psychology+pdf In PDF document text
    • http://natubama.logos2gogo.com/uploads/1/3/2/6/132696021/porewaji.pdfIn PDF document text
    • http://files.nebulawebsolutions.com.au/uploads/1/3/1/6/131606362/03c3d3c7db.pdfIn PDF document text
    • http://files.christinecarson.net/uploads/1/3/1/4/131408204/dda0b205c.pdfIn PDF document text
    • http://files.haliburtoncountyfoodnet.com/uploads/1/3/1/4/131453022/b9d07bc3eb3f45.pdfIn PDF document text
    • http://files.westchestercounties.com/uploads/1/3/0/8/130874480/6325448.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/1/0428/0333/1231/files/psychology_david_myers_8th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5802/6903/files/sivoxibup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3230/5054/files/memarujeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7768/8743/files/30488961386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4149/6981/files/acura_mdx_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6370/files/zomosofizuwiwugoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9888/1704/files/39420548461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/produo_de_biocombustveis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4995/8046/files/fomivusawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3364/7525/files/wupukixujoganuxozosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5389/1232/files/undamaged_hippogryph_feather.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6557/2514/files/tasifani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/gta_5_usb_mod_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2859/3315/files/23782486874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2113/9096/files/40223873187.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8070 5676 bytes
SHA-256: ccaba73c44b1998dd04951fd24e059efa3fb5c8a87cdbea69298c8cd15c7fbff
font_01_sfnt_off000093af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93AF 10400 bytes
SHA-256: f97756015a55c35e1c3374777eef4938d94409a89fdb8cd3b1b54f2241423ef0