Malicious PDF — malware analysis report

Static analysis result for SHA-256 de2ba426bede7302…

MALICIOUS

PDF

37.5 KB Created: 2020-08-04 05:08:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c2b886c7ff5ed973da78bc434bc49fc SHA-1: 48486f2ef0653e312c7368e24612a8698775453b SHA-256: de2ba426bede73022b2073f2619b7965f731907e8f7a25ec459267e3ee259c8d
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for educational content. The primary malicious URL is ttraff.ru, which is used to redirect users to other potentially harmful sites. The presence of numerous links, including one to a known malicious redirector, strongly suggests a phishing or malicious redirection 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.ru/pify?keyword=present+continuous+tense+exercises+intermediate+pdf In PDF document text
    • http://files.projectlittledreams.org/uploads/1/3/1/3/131382721/tikunok.pdfIn PDF document text
    • http://files.elkfordearlyyears.com/uploads/1/3/1/4/131437453/tumaliriwajit.pdfIn PDF document text
    • http://files.enablingability.com/uploads/1/3/2/6/132683142/1a304039.pdfIn PDF document text
    • http://files.laundrydayinc.com/uploads/1/3/0/8/130813732/fijadeno.pdfIn PDF document text
    • http://files.communicationaactualized.com/uploads/1/3/0/8/130874254/1060423.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/1/0428/9835/8432/files/16175378270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4238/1725/files/bemikexamasudavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2931/5239/files/zigax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6345/9496/files/v_belt_cross_reference.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4192/2977/files/37380037943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1021/9432/files/lidefilikupaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/fonizedotawupomorovak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0189/6347/files/56094786798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/roveku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3358/4035/files/honeywell_th4110d1007_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/moboximopikexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/40750702090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7879/4920/files/vijogusubivu.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 5

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_off0000546d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x546D 5336 bytes
SHA-256: f2f7d023b479eb2d8988fcc7d4b164e8a38cd2f0daf173ecc681efe1dda09fc5
font_01_sfnt_off00006685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6685 10012 bytes
SHA-256: 96862ecee5748c8419f858171f191bbfade608dcd28e220beb2edd1df42a0add

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