Malicious PDF — malware analysis report

Static analysis result for SHA-256 813a1b0fd5311d49…

MALICIOUS

PDF

33.9 KB Created: 2020-08-20 02:03:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 929e00fb912e587785003c743d287b95 SHA-1: e02b7403c1fc52710bec0a9b6c5f95e07a9dbc97 SHA-256: 813a1b0fd5311d49744c44b69ec74d22a1ec32f5f0d60c1f279074be10e637a9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and numerous benign-looking Shopify URLs, suggesting a link farm designed to obscure the malicious destination. This pattern is indicative of a phishing or malware distribution lure, likely delivered as a spearphishing attachment.

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=iguana+coloring+sheets In PDF document text
    • http://files.spanishcampwithprofe.com/uploads/1/3/2/8/132815181/e4fcb67.pdfIn PDF document text
    • http://files.armstrongfami.com/uploads/1/3/2/8/132814286/1867318.pdfIn PDF document text
    • http://tubopupeb.230congress.com/uploads/1/3/2/7/132740892/lorepasujejexivuku.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/1/0435/1793/5770/files/86157582177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/53595139828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6972/6110/files/49973290225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2076/0741/files/jquery_get_innerhtml.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1568/3743/files/where_are_you_form_in_japanese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/56523117687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/digidumogekuseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2448/0416/files/gamubajazani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2785/5522/files/lexogiduxobedez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7029/9038/files/leluwumevore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8907/5099/files/31899627448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/60970591327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/conduction_convection_radiation.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

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49B4 4996 bytes
SHA-256: dbdb7e2b5b5ca6b8534ddbe2441eb17cada6f00443e33f9bd626789e5e4ff302
font_01_sfnt_off00005aa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA6 9500 bytes
SHA-256: e0f0de677400503b61b47a567f2691a8f8dd715690925963e7893bd086d77071

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