Malicious PDF — malware analysis report

Static analysis result for SHA-256 f24541a80b8db8fe…

MALICIOUS

PDF

66.7 KB Created: 2020-08-22 19:42:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 978e35e3121e24872a4e989e4a8266e6 SHA-1: 734a10088ac95e2bc2ccb162067f4fc56724bacd SHA-256: f24541a80b8db8fe27429b219274754993f8ece811188dd2c14e680573e1e2c3
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.cc/pify?keyword=balance+sheet+translation+to+arabic'. This URL is likely used to redirect the user to a malicious site. The document also contains a PDF link farm heuristic, indicating a large number of external links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily corrupted, contains the text 'Balance sheet translation to arabic' and the malicious URL, reinforcing the phishing pretext.

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=balance+sheet+translation+to+arabic In PDF document text
    • http://files.faerychildcare.ca/uploads/1/3/0/9/130969037/mutizoberojudebuwoz.pdfIn PDF document text
    • http://files.yogaskies.net/uploads/1/3/2/7/132740182/nizidukoroloju.pdfIn PDF document text
    • http://files.mmzurita.com/uploads/1/3/1/3/131380894/nezazozo.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/1/0431/9153/3725/files/sibujewekewafute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7424/1187/files/18674654653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/81072901867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8724/0093/files/apportion_crossword_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3247/6838/files/woxigabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7487/0689/files/principles_of_biochemistry_lehninger_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2308/1378/files/bigavugovomevowofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/zumalulozugetitebepasulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/libros_apocrifos_macabeos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6366/5055/files/gaguwopel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0004/5469/files/74704086697.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000c629.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC629 31644 bytes
SHA-256: 10e29ecb0a41b907221df897c71f15a82c1296a7e58182f83c8e2014c21d7196
font_00_sfnt_off0000924c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x924C 5076 bytes
SHA-256: 2d818f3e0c6f15d1551d50a5af81005a53478a7bb0f8eb309f065518ce27a420
font_01_sfnt_off0000a377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA377 10148 bytes
SHA-256: 33657597eecc6f4155047d2d4f583de3e626c18cf8f5051df8350e562051acac