Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd1daa0e693b7024…

MALICIOUS

PDF

42.8 KB Created: 2020-08-08 17:27:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9679fdd4a08c8887ebdd228029a6c29c SHA-1: 6f28f09cf53b358f32091bfd6d408de2128d6afc SHA-256: cd1daa0e693b7024116eb45fc96c22eaba6d12251e88d1f3256334df961ae250
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=alimentos+con+fibra+insoluble+pdf. The document body is heavily obfuscated and appears to be a lure related to 'Alimentos con fibra insoluble pdf'. The presence of numerous links, including one pointing to a known malicious redirector, strongly suggests a phishing or malware distribution 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=alimentos+con+fibra+insoluble+pdf In PDF document text
    • http://files.aubreyrosefalk.com/uploads/1/3/2/3/132302928/pivub_pibepuro_naseruk.pdfIn PDF document text
    • http://files.rashbiprayers.com/uploads/1/3/2/6/132682048/vularofovoxap-mizaw-faleraniz.pdfIn PDF document text
    • http://files.publichealthbaron.info/uploads/1/3/2/6/132681901/8360923.pdfIn PDF document text
    • http://files.whoanellypress.com/uploads/1/3/1/8/131872198/jepusujabenew_xifuvovunod.pdfIn PDF document text
    • http://files.thegratitudeadventure.com/uploads/1/3/1/0/131070688/fezoriwubuzabebofo.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/1/0434/2428/4824/files/xaluniperugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2326/9014/files/41245178358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6049/4485/files/abella_danger_kelsi_monroe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6209/1163/files/nodisenubalor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7854/9665/files/actual_reading_test_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/60845338620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sexewagufik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3605/2389/files/variable_frequency_drive_working_principle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8152/1560/files/gubavidako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/zenowomeligoxufofuvam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5842/1142/files/bartok_mikrokosmos_vol_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8701/8649/files/dulubofoxuru.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 7

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_off0000674e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674E 5432 bytes
SHA-256: 8f0d69270a3f97081d0df2ad25a3a6ef93ca63f7324fdba3ab491eb6701b03bb
font_01_sfnt_off000079a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A8 10716 bytes
SHA-256: 546e67b84593cad4b68b0278ec4c935961f9c3f3aae32f04bb4f60c5e7c4c19e

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