Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f30822a459ed4b…

MALICIOUS

PDF

45.6 KB Created: 2020-08-09 16:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea688408f60d594621eaf0fbb4760d5e SHA-1: e4ca2e0575ca914d2f571da3e40d175339b29cf5 SHA-256: c6f30822a459ed4b7ebde18ac5268623bb29d58a262437b6d370b71ad890c3b1
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to what appears to be a link farm designed to mimic legitimate document repositories. The primary malicious URL, 'https://ttraff.com/pify?keyword=acls+textbook+pdf', is identified as a malicious redirector. This suggests the document's purpose is to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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=acls+textbook+pdf In PDF document text
    • http://files.crittendenhospitalconference.com/uploads/1/3/2/6/132681979/2a8532e010133.pdfIn PDF document text
    • http://files.michaelquesnel.com/uploads/1/3/1/3/131397946/wolozinevox.pdfIn PDF document text
    • http://files.stevewolfeaz.com/uploads/1/3/0/9/130969478/8a8d263adf.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/1/0444/7754/6663/files/short_report_on_road_accident.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2026/2308/files/56628172743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1522/4996/files/vipewunepunezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0262/5178/files/20309175434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7099/4085/files/luxanalebonovol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/jerafosipiwaledagidinela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/36873966576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/20152554729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2670/1718/files/89942197125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/dialysis_patient_diet_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6762/2055/files/english_alphabet_for_spanish_speakers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4787/0876/files/analog_and_digital_electronics_and_circuits.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 3

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_off00007520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7520 5104 bytes
SHA-256: 092f0d6bf8b2c1696cfee9a1af5f8ca61df2c82bd89ebc7be2f5a3f29b8bcc24
font_01_sfnt_off0000869d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x869D 10372 bytes
SHA-256: f18cbf63e1d68b9daff4cfabd3748ba2c4d91d7efe846df6c8ebf551792d5c1a

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