Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddaa5e2622aa22fe…

MALICIOUS

PDF

48.0 KB Created: 2020-08-06 18:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94ed8bf4b0039d3a8c75d1dd47706da6 SHA-1: fb985f7d69fdadedad520900c340cd05f3e04994 SHA-256: ddaa5e2622aa22fe43401b44f0a6774861eefb03e6d1f9c17e578cb52b12b7a7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious Link

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a link farm strategy, likely to manipulate search results or distribute malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=cambridge+advanced+vocabulary+pdf. No scripts were extracted from this sample.

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=cambridge+advanced+vocabulary+pdf In PDF document text
    • http://files.andywilsonmusic.net/uploads/1/3/0/8/130813985/xuvafaninopoju_ratuwuxenote.pdfIn PDF document text
    • http://files.tutuadorabow.com/uploads/1/3/0/7/130776451/c750bc541b5cd4.pdfIn PDF document text
    • http://files.magiccitybrigade.org/uploads/1/3/2/3/132303270/4311607.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/1/0431/0512/4516/files/noxotegunapawubigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7148/8668/files/3872338625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4337/2699/files/synovial_fluid_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4465/0651/files/palowisari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/4558/7877/files/dubai_metro_green_line_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6863/files/kajanebokogawakemire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7426/4996/files/rexidafana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6522/1028/files/28412319149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/kisikivopelusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/27596942227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1827/3446/files/90805704405.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

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000957e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x957E 18832 bytes
SHA-256: f9c0d992a1ca6d04488729dc524d8c274884c894ec4608741e8105612fec2109
font_00_sfnt_off00006091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6091 5504 bytes
SHA-256: 0db467acd7f4eeec86ec450044b489e6ba9a94e4ce7c757703dd6dc1e80d97f5
font_01_sfnt_off0000733b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x733B 9976 bytes
SHA-256: e08fd2be8fbceacce3b3afa2c343a89526f6bb4f9569d3f38a098bf76e9b8987

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