Malicious PDF — malware analysis report

Static analysis result for SHA-256 40f502f7cdbd5c0a…

MALICIOUS

PDF

39.5 KB Created: 2020-08-09 22:51:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 507161dbf7bc613806021c9991244cf7 SHA-1: 098a48fe4840b66e05b6845ede2c4785bc906d24 SHA-256: 40f502f7cdbd5c0ac6b22fc0a5fdb6b30e1065574f02e283b16f1e23e3ce6ed3
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=calendario+2020+con+feriados+peru+pdf'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. The document body itself contains obfuscated text and the malicious URL.

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=calendario+2020+con+feriados+peru+pdf In PDF document text
    • http://files.crookstonmusic.org/uploads/1/3/2/7/132741189/1492540.pdfIn PDF document text
    • http://vomolowi.tiesthatbindstore.com/uploads/1/3/1/4/131437601/2c9ddda3c1577c8.pdfIn PDF document text
    • http://files.stpetetowtrucks.com/uploads/1/3/1/8/131856191/felobik.pdfIn PDF document text
    • http://files.synergistic-approach.com/uploads/1/3/1/1/131163635/fccec4a59daa276.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/1/0433/8181/7495/files/clark_forklift_parts_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8070/3399/files/vokojifesugetederiwagosek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5645/5067/files/virixopipalav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/78898652969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2622/7093/files/synonyms_words_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/amplitude_frequency_and_phase_modulation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2392/4376/files/fuwugemenimedolokoziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/26125028729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5765/8521/files/bcd_adder_truth_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3090/7813/files/85685002000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6982/3383/files/zunusugilurutub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/gmo_quiz.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 6

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_off00005b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B45 5328 bytes
SHA-256: 4ceef3811f2e9f807182f353c73c32b0520ca0eeae34f86fdfede8de5fdfe812
font_01_sfnt_off00006d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6E 10864 bytes
SHA-256: b5c27af2a2d9943915a4436ecce3073c6e6ed7a9b787919c92ad5c577ace81e2

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