Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd435800151a24c5…

MALICIOUS

PDF

52.8 KB Created: 2020-08-20 23:05:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a7e2a65637ef91438834ef4280c9439 SHA-1: 4fe0330d705d4d5a0524c6cc9786af520e03ec7d SHA-256: dd435800151a24c59425dbcf1a26ce6f4cccba4ed01a52b0d996094c69847c0d
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 domains associated with link farms and redirectors. The primary malicious link identified is 'https://ttraff.com/pify?keyword=false+coral+snake+care+sheet', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting a social engineering lure disguised as a care sheet to drive traffic to malicious infrastructure.

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=false+coral+snake+care+sheet In PDF document text
    • http://files.kauaicleaningdoneright.com/uploads/1/3/1/4/131454521/5213611.pdfIn PDF document text
    • http://somabodaw.amalgamatedstory.com/uploads/1/3/2/7/132740892/rasifewa_babipug.pdfIn PDF document text
    • http://files.noelironart.net/uploads/1/3/1/0/131071067/2416974.pdfIn PDF document text
    • http://files.staceydrago.com/uploads/1/3/1/8/131871951/190565.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/1/0429/8588/1759/files/self_recommendation_letter_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8338/6280/files/c_thread_safe_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7451/9194/files/jawadirofaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8691/3431/files/81838768837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/94091635475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7141/3160/files/etymological_dictionary_of_the_armenian_inherited_lexicon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7583/6840/files/pdf_to_word_converter_software_freeware.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0844/8919/files/96204335327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/33826050593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1475/7288/files/payment_request_form_gmu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/24615384207.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 8

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_off00009147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9147 4904 bytes
SHA-256: cc35fcacbc762824dcf158a1b383bd366faba333eb4af2cd8b7fe1986930a18f
font_01_sfnt_off0000a1e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1E5 10636 bytes
SHA-256: ca59c7ed5f5733719fcd686d28d4879fb2335eaaed584c8cba7ea01156fe8690

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