Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd18f2f525048ee7…

MALICIOUS

PDF

41.3 KB Created: 2020-08-12 02:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 348c11a17b05a9d54356a42b5b00487b SHA-1: 2a0b4497448517a3ed1a19b734b3328e4dce8e38 SHA-256: fd18f2f525048ee78c014fbb6a466de60b0fddb91aac74fd0f043e941435a75f
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, with one critical heuristic identifying it as a link farm designed to redirect users. The primary malicious URL identified is https://ttraff.cc/wb?keyword=easy%20synonyms%20and%20antonyms%20worksheet. This suggests the document's purpose is to lure users to malicious content through a network of redirectors.

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/wb?keyword=easy%20synonyms%20and%20antonyms%20worksheet In PDF document text
    • http://files.tarjetaverde.net/uploads/1/3/2/6/132682868/luwugotupaguw_gawedevadus_xijamapupib_lajateja.pdfIn PDF document text
    • http://files.communitytransporttraining.com/uploads/1/3/2/7/132710780/razufojawifulasuzog.pdfIn PDF document text
    • http://files.djsfunctionandevents.com/uploads/1/3/1/4/131483305/3ce81c86fb1a2.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/1/0429/0094/7103/files/antenna_design_parameters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9986/4734/files/72947295411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7545/2569/files/d_d_5e_hobgoblin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4768/0162/files/sukalamunipisutodomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6295/9006/files/riburaxawukodapotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/3219684035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/vufosifelufodijaxelogikul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/40856239853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2882/4742/files/mimul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1393/0142/files/46461528400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6811/3574/files/color_discord_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3590/0569/files/agradecimientos_de_tesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/lavozinazepezesimosodemap.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_off00006278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6278 5248 bytes
SHA-256: cfc819209f83812c79105191e27a9821733ad2475dddac60c92f2284f7809f4f
font_01_sfnt_off00007437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7437 10476 bytes
SHA-256: 9a42cc9fd9090aea208261bdf841d92d9ec24d2a06bc7030b96fd7f0a511e341

Open this report in the interactive analyzer, or submit your own file for analysis.