Malicious PDF — malware analysis report

Static analysis result for SHA-256 423243e2d18c3221…

MALICIOUS

PDF

41.5 KB Created: 2020-08-11 13:38:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a04ec4cf9424c01ee9134a211a57ea80 SHA-1: e9d7a0597d76ba4c77068adc4e441a95f4a541bf SHA-256: 423243e2d18c32210cd8518a1da6e27857bf35dbf504768fc8d65a3758ea4875
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=comparing+fractions+worksheet+pdf+with+answers'. This URL is likely part of a phishing or scam campaign, attempting to lure users into clicking through to a malicious site. The document body also contains numerous embedded URLs, many hosted on Shopify, which is characteristic of SEO link farm techniques used to distribute malicious content.

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=comparing+fractions+worksheet+pdf+with+answers In PDF document text
    • http://files.unclekennysorgourmet.com/uploads/1/3/0/7/130775936/tubud_tiwipew.pdfIn PDF document text
    • http://files.sinergysports.com/uploads/1/3/1/6/131637240/gekoteno.pdfIn PDF document text
    • http://files.alexandriaponce.org/uploads/1/3/1/1/131163540/tovotarosi-notizimefera-jigaxedatevezi.pdfIn PDF document text
    • http://files.ea-abc.org/uploads/1/3/1/6/131606343/lalusada-tufebagedan.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/1/0433/0687/7080/files/demesudixagivok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/mobile_test_automation_with_appium_nishant_verma_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6067/2165/files/62101390653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5209/5898/files/b_lactamicos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/69857338917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/star_wars_west_end.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6151/0293/files/49542300687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5497/7444/files/97257816349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8642/0893/files/names_of_animals_in_french.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/83894287195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39748763391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2707/0104/files/23021648095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2247/4651/files/flex_slider_option.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 5

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_off000062b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B3 5596 bytes
SHA-256: 82b2b64b0c0c3ed459a9227637b85ef22a67f88840f0f2cb0a32b04c1b01a4f1
font_01_sfnt_off000075a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A0 10512 bytes
SHA-256: db49c9d1231e770c0bb272a19afc28b286e9f7b6d4398e12d12913eea5f5d0fd

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