Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea26f0f5ce59422…

MALICIOUS

PDF

47.5 KB Created: 2020-08-03 16:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49e186bc1aeb47b8fd0304fb9d934407 SHA-1: 9d9e9e8be96bfbb0e20016176ad033d4ec896eda SHA-256: 2ea26f0f5ce5942293dfe28ce5d7b2c79b48eeacce4cf0b60f013ce9338262f2
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at `https://ttraff.cc/pify?keyword=industrial+microbiology+by+le+casida+pdf`. This suggests the document is designed to lure users to malicious infrastructure, likely for further exploitation or phishing. The document body itself contains obfuscated text and references to the redirector URL, reinforcing this malicious intent.

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=industrial+microbiology+by+le+casida+pdf In PDF document text
    • http://files.hkcfoundationforparkinsons.org/uploads/1/3/1/4/131437319/ed1c3b0952cc8.pdfIn PDF document text
    • http://files.vauxhallvillageosteopathy.com/uploads/1/3/1/0/131070192/6c71ac24d2.pdfIn PDF document text
    • http://files.thereadingpublicmagazine.com/uploads/1/3/0/7/130775762/2084778.pdfIn PDF document text
    • http://files.missdayteaches.com/uploads/1/3/2/6/132681851/f83d75829.pdfIn PDF document text
    • http://files.ockelmann-art.com/uploads/1/3/1/4/131453733/2883645c7.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/1/0433/9158/2357/files/piwijomawogepikakosuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6962/8828/files/how_to_run_shell_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6254/1982/files/dadofubovowitoxereke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23281911610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/62589354303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/sajopugiribadogoxafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6820/9817/files/kogeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/30149358622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/45873610070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7614/8638/files/82171734443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23158701460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2816/9382/files/mesanepalukotizulire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4691/0617/files/47136462089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1204107997.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_off000063df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DF 5656 bytes
SHA-256: 240ca5e00c4907a3554149483b1061d8f0f2f32ead88b37ee4960cd6de5a83fc
font_01_sfnt_off00007709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7709 10560 bytes
SHA-256: ba18246cca7e42abc084517732376cc08681de100c164ee60624bec95e01aa6b
font_02_sfnt_off00009b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B23 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8