Malicious PDF — malware analysis report

Static analysis result for SHA-256 5207d5baa280cb11…

MALICIOUS

PDF

42.5 KB Created: 2020-08-06 00:08:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f90ece9975dc9a6190b55d05b3e5032 SHA-1: f9040e0901aa76880b2e2437df590b33df83c52b SHA-256: 5207d5baa280cb1104558a58e67436eb42e2dee3861be86948997c42a3a9b021
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users into downloading further malicious content. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO poisoning or distribution. The ML classifier strongly indicated maliciousness, and the presence of the redirector URL confirms the intent to lead users to harmful sites.

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=building+electrical+engineering+pdf In PDF document text
    • http://files.thedreamersprojects.com/uploads/1/3/0/7/130776641/6839608.pdfIn PDF document text
    • http://vaxopi.losaltosneighbors.com/uploads/1/3/1/8/131856772/6017889.pdfIn PDF document text
    • http://files.309926647509648019.com/uploads/1/3/0/8/130814914/gokavexevoxaxis.pdfIn PDF document text
    • http://files.seattleudancemarathon.org/uploads/1/3/1/4/131437276/virevemirepub_kumidibuzidofob.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/1/0433/3466/4347/files/21806959049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/83957670117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/63665813743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9768/5157/files/72150952942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0077/4307/files/convert_list_to_dataframe_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8962/5241/files/75452902768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4918/7493/files/3635493493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78108387577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/wcf_vs._web_api.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/9018936067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/deductive_reasoning_worksheets.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_off00006823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6823 5196 bytes
SHA-256: 225052b31deab05e073c28fc3dd5f7bcdb9d77f3a6c475b73218e4e4e90f7d89
font_01_sfnt_off000079e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E4 10340 bytes
SHA-256: 2df2b578b4d3801d49f5f666ad5354d58035ba9a33342eeae36cd57594483e32

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