Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cea8f147fc0d471…

MALICIOUS

PDF

46.3 KB Created: 2020-08-12 21:23:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5022a40789cc21406517e270fc40ec1 SHA-1: fca379abae50a2b50083d59045f3c4096077f4f3 SHA-256: 5cea8f147fc0d471acdc1b8b1f6daf9ee08159ba8ea165f554f50795bf096db4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service ('ttraff.com'). This indicates a likely attempt to direct users to malicious websites for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious.

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=indexing+and+abstracting+pdf+download In PDF document text
    • http://powimepo.hermanngardentours.com/uploads/1/3/0/7/130775612/vazasidanolena.pdfIn PDF document text
    • http://rewemewi.pilotsatpenn.com/uploads/1/3/2/6/132682646/rewulagilex_zasaxifevusafaf_vogofesolotuxex_dimosumozor.pdfIn PDF document text
    • http://zexolenob.ggemergencyshutters.co.uk/uploads/1/3/1/3/131379992/jibisuzutisim_vevobaz_nekerafiw_runevajovotu.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/1/0437/5281/6798/files/58263024867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0608/9640/files/mokejam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8016/3227/files/how_do_you_install_minecraft_forge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7455/0949/files/41754631569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1723/9704/files/prime_primer_gungeon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2287/6826/files/95605351697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0602/4101/files/bash_command_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7099/4085/files/52511508652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5963/3559/files/19999272449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3445/0840/files/wagaya_no_oinari-_sama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8523/4338/files/bozaxotot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3014/2363/files/fejugonalok.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 1

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_off00006fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDA 5560 bytes
SHA-256: e52a7cdbdb3d70ec6797b691270f65b61208e4e3dfb04ab42b3824a14c40bdf1
font_01_sfnt_off000082e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E4 12324 bytes
SHA-256: 0c6b7ba4901c870116752ba814279ef7c4f5fc9e6e4b398cdd86a1de581f5b84

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