Malicious PDF — malware analysis report

Static analysis result for SHA-256 581955d70ce1a2b9…

MALICIOUS

PDF

69.2 KB Created: 2020-08-22 01:25:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a87614481d955bc7909150fb121e8a65 SHA-1: 4c8832c5a414e8acbc315fa411dd7b313d6c3b53 SHA-256: 581955d70ce1a2b91ac8aad2cabcc0168311f2983929719d884d7d611722da14
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=follow+guidelines+synonym'. This URL is likely used to lure users into a phishing or scam operation. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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.com/pify?keyword=follow+guidelines+synonym In PDF document text
    • http://files.compassionate-language.com/uploads/1/3/1/4/131406893/2f62994bafcffa7.pdfIn PDF document text
    • http://files.ribbonsbiz.com/uploads/1/3/2/6/132695391/c9ad23d48c764.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5481/3599/files/agronomy_treatise_book_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/surah_baqarah_full_in_arabic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/61744950129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2596/4966/files/10131082307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/alvin_and_the_chipmunks_1983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4111/1712/files/xivujekupelonubeviwej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/kunegejixixuvurit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6087/9782/files/89699375752.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_010_off0000da50.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xDA50 18908 bytes
SHA-256: 90fc200e3ab4fc285bfd95cbf476f74bfb7b0c604fa52f13d98103f0584c4f1b
font_00_sfnt_off0000518b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x518B 6288 bytes
SHA-256: 5cead508df49fb20cb3866e04d29932efced0caf642d730f269cb6721d61857e
font_01_sfnt_off00006738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6738 4988 bytes
SHA-256: 8f019806beb4105b6a84de5a48237aa125d9a1023270a5b4154091b4db845ee3
font_02_sfnt_off00007839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7839 3708 bytes
SHA-256: 3b2843af7010ae2f0b96634915db093b740299afd89a3f632862097ca169bcf9
font_03_sfnt_off00008590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8590 2328 bytes
SHA-256: 864cbe2c6973b44d2b71e19ffbffb2328dcb3759b07ceb43c11d5a372fc4956d
font_04_sfnt_off00009046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9046 2108 bytes
SHA-256: d117309382da938f7dffedc42f90dd4217b4d540d75629b80669d975ecbc171e
font_05_sfnt_off00009a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A11 6640 bytes
SHA-256: 538512be6c526ea957b587fa229624d829dca4873b622d187784a60d2c877fcd
font_06_sfnt_off0000abaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABAF 15508 bytes
SHA-256: 490b58643a98db656fbbed480e6de142173fcce0b1556e9a8537ec9056739142
font_08_sfnt_off0000f8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8ED 3276 bytes
SHA-256: c12c670e310cd2dd0f4b1ea6ea0d01ef35e1284caa1cfc967b978b02bd897c09