Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a5b88bbb988f590…

MALICIOUS

PDF

40.6 KB Created: 2020-08-07 09:30:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 594bfafd07664461fc32f0202d4752e0 SHA-1: 7f7d235b07ab382f12d45a5ff68e9dccfb788303 SHA-256: 1a5b88bbb988f5901294ca811fcdbac68234791b55aee90ca2a41af8faf31e6f
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a deliberate attempt to distribute malicious content or redirect users to harmful sites. The document body, though heavily obfuscated, contains the URL of the malicious redirector and a list of other PDF links, suggesting a lure to download or view further content which likely leads to malware.

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=proposal+pendidikan+agama+islam+pdf In PDF document text
    • http://files.mountainrecreation.net/uploads/1/3/2/7/132740541/wiperumulebero-baketide-vojejer-bidetofitadosa.pdfIn PDF document text
    • http://files.raphel.com/uploads/1/3/1/4/131453194/7864879.pdfIn PDF document text
    • http://files.dnatransfiguration.com/uploads/1/3/1/4/131407823/kemiduwe.pdfIn PDF document text
    • http://files.heberwildhorses.com/uploads/1/3/1/8/131871518/mivulexomex.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/1/0434/3981/6861/files/pamadagigunubojomiwozod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1608/5916/files/bible_quiz_bee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/distressed_debt_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8374/9781/files/78469348547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0583/files/bulidusojumurulasesopolop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7035/6637/files/muvigimif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6641/6534/files/74316449801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5640/5411/files/43547911951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/matam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1796/0604/files/baferejonalidadepix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9244/2264/files/27554808644.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_off000060ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AD 5428 bytes
SHA-256: bdb0d4d050e0244a54690dad0343e597d1efe3562aab0fb249cba4a3a745acfd
font_01_sfnt_off0000730f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730F 10068 bytes
SHA-256: feecff76d9f2b058a0d119d7771f8b4525495c527a23cd038b905e6f585c79f2

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