Malicious PDF — malware analysis report

Static analysis result for SHA-256 3975b0ad17bb17d4…

MALICIOUS

PDF

43.9 KB Created: 2020-08-10 20:26:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3edd84ae2ce7070825f53fd694821a78 SHA-1: a8cb5a2a16b1ed77ac7e30e95a3854bc9c3adc5b SHA-256: 3975b0ad17bb17d456bee524f11cb5656cbe9b91425c835cfc9c4f76b968b6ae
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, https://ttraff.cc/pify?keyword=candidiase+em+homem+pdf, which likely serves as the initial lure. The document body, though heavily obfuscated, contains references to this URL and other PDF-related lures, suggesting a phishing or scam attempt.

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=candidiase+em+homem+pdf In PDF document text
    • http://files.poysontee.com/uploads/1/3/1/3/131398351/kunoxanobujemevil.pdfIn PDF document text
    • http://jemiz.hearttoheartchristinerossi.com/uploads/1/3/0/8/130814328/rexutaxawuvizusuvoka.pdfIn PDF document text
    • http://files.arrivecollegeconsulting.com/uploads/1/3/1/3/131398333/7f6c7.pdfIn PDF document text
    • http://files.jowitz.com/uploads/1/3/0/8/130874520/bf1aa54e.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/1/0437/1356/0731/files/dikupam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuwofomakilaxenifotet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5135/1200/files/ielts_reading_general_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5465/1799/files/78761839448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1419/2285/files/47466014097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8145/8069/files/xonoxolilesowalelanoxut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7335/5424/files/placement_tests_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/komoronudoxikaredamotuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3032/3101/files/how_to_get_advantage_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/pezodovewenesix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/fupevujetizifububipas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0783/5292/files/cholecystitis_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/kixabitabetubokujodoki.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 4

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_off00006e9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9A 5060 bytes
SHA-256: e4b7144c5c93a053910f400ee4bbd5dbb2f98760ee16f41591e331c1724d8b7e
font_01_sfnt_off00007fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FAB 10304 bytes
SHA-256: a2dd3514f49e5d448566cdba46177047bf7c5aa864abae6f475942bffbcd89c5

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