Malicious PDF — malware analysis report

Static analysis result for SHA-256 1749ecf6ff7fe8d9…

MALICIOUS

PDF

50.2 KB Created: 2020-08-11 17:14:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a12f660dfad5cd525b7f39e2533c6cee SHA-1: 0f35054b7f55df91c9c67a199751001a03131490 SHA-256: 1749ecf6ff7fe8d9f76f4ed04472cfb3a8d0e1612164f31bb45a7d17887aecf2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, many of which are part of a link farm designed to redirect users to malicious infrastructure. The primary redirector URL is identified as malicious, suggesting the document is a lure for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate an attempt to exploit user trust for malicious purposes.

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/wb?keyword=quran%20pdf%20arabic%20english%20free%20download In PDF document text
    • http://files.timeoutsportsbarandgrill.net/uploads/1/3/1/4/131454286/zobatobatokijixenus.pdfIn PDF document text
    • http://jewisur.thesciencelady.co.uk/uploads/1/3/1/6/131606490/fukurigaro-bufob-sepifoje.pdfIn PDF document text
    • http://files.boxersvonamadeus.com/uploads/1/3/1/0/131070847/mawepuxukisis_riwujaporub_diditet.pdfIn PDF document text
    • http://files.partoencasamujeressabias.com/uploads/1/3/1/4/131453867/dozobelaperisus_petipovanax_samuwutepina.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/1/0431/6587/6379/files/sesiwukiserelenugeporujot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/romutamuzididotagazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/vexebebiperifujezum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4183/3635/files/fosuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9647/3749/files/bangladesh_cost_accounting_standards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/tufif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9737/2312/files/18650308031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/letib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/zedalif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5542/4423/files/simple_present_progressive_tense_worksheets.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE3 5712 bytes
SHA-256: cfe9128a2dec196d8763410bd6be29c9829e4483756135209531e18912c18e47
font_01_sfnt_off0000704f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704F 9948 bytes
SHA-256: 56bb57a91d21bad8a2755c9ea1b31ac3055f3bad3a9a7852625f6726520ceabb
font_02_sfnt_off0000928d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928D 22848 bytes
SHA-256: 8eb4918b16c7dfdf4d53df4e7be20aaa256708fc7506247ce2d315afc220eb7f

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