Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d2dce88422a95c…

MALICIOUS

PDF

45.5 KB Created: 2020-07-31 14:07:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f4a498f0e30b943f465136386ea8bd37 SHA-1: a205b0da07fa66a2a2eab73dac6a207a5970001b SHA-256: 48d2dce88422a95c577b69d5cb7ed2b7fc093122e67c7af517a9889506cb29f8
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, appears to reference a German language course, a common lure. The presence of multiple Shopify-hosted PDF links suggests a link farm or SEO poisoning tactic to increase visibility and traffic to malicious sites. The ML classifier strongly indicates malicious intent.

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=cours+allemand+b1+pdf+gratuit In PDF document text
    • http://files.ashleighnicoleevents.com/uploads/1/3/0/9/130969440/tifedeniwe-lijemawipafi-dumadutugubiw.pdfIn PDF document text
    • http://files.patrickinpanama.co.uk/uploads/1/3/0/7/130740255/migiwores-fadosaxivine-vuwafemawepexis.pdfIn PDF document text
    • http://files.seattleimprov.com/uploads/1/3/1/1/131164251/dulewilebunexok_gurugubemeninaf.pdfIn PDF document text
    • http://files.brandieinla.com/uploads/1/3/2/3/132303226/d11ec13ab.pdfIn PDF document text
    • http://files.leisuretravelplus.com/uploads/1/3/1/3/131384432/5756364.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/1/0434/6321/3209/files/94366377065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7911/files/84151991512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/bumew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1543/0559/files/28778547938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7532/1499/files/61023212995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nuruge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2058/3065/files/tuliwalabejusezaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/68707918830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/83927908117.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_off00006e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E95 5460 bytes
SHA-256: e131210ce4f4874abbfba6390cc400312a282829efadbc6447950d9756aec702
font_01_sfnt_off00008114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8114 11976 bytes
SHA-256: 1aa5b24010bfa3e10cd6611c3b5397622df65e3cbb74608ddf9031a2a7fe264b

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