Malicious PDF — malware analysis report

Static analysis result for SHA-256 1255fc49001635f1…

MALICIOUS

PDF

58.0 KB Created: 2020-08-23 01:13:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: abb663b45d9faa30aed583b90f5b776c SHA-1: afd0a9c890c298caa69896d22eb20395c3e97aa0 SHA-256: 1255fc49001635f15bdff4e2b04bf0b7a8e30e797ee98a596d500849acdcf1bc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, designed to funnel users to potentially harmful sites. The primary redirector URL, 'https://ttraff.com/pify?keyword=blend+s+opening+song', is flagged as malicious. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure for free downloads that redirects to malicious infrastructure.

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.com/pify?keyword=blend+s+opening+song In PDF document text
    • http://files.stlcreativelandscapes.com/uploads/1/3/0/8/130813650/ff278834.pdfIn PDF document text
    • http://files.eceprek.com/uploads/1/3/2/8/132814050/9665404.pdfIn PDF document text
    • http://bivijile.msmorales-chemistry411.com/uploads/1/3/1/1/131163729/5008513.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/1/0437/6556/3549/files/zumurelab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/sipirerizoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3089/4999/files/gudujiwab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0160/8353/files/balloonist_sf_font_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/2792/5925/files/medical_laboratory_technology_books_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0913/9111/files/neropenafurerusisaleni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1710/7618/files/suserusixuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/bnfices_non_commerciaux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4331/5102/files/kobalese.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6795 9088 bytes
SHA-256: 3592cc9ece467c3ed99c2d023f4240061ee1b066f83795105ffb3b4b0dcf24d5
font_01_sfnt_off000085f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F7 4868 bytes
SHA-256: b6322c795324efa11a7257ff90e6c9511354cc5a7ea58d37b687785b50aa2982
font_02_sfnt_off000096a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96A3 14432 bytes
SHA-256: 0e0b446efc513665b611aa363921401cea5fbaab1d6685052e19f5596f06d754
font_03_sfnt_off0000c407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC407 16552 bytes
SHA-256: 2624567f02531c60028a8a759855cc804cc712c887ff47829cc0454dcb65c1a8

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