Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ccbdb16a37fae5…

MALICIOUS

PDF

56.2 KB Created: 2020-08-09 21:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fbf2e2b60c249d3aa72f7a57ae30d929 SHA-1: 383dca3a1833427e93e9c902c4edb9e30fa968ab SHA-256: 14ccbdb16a37fae5345217434a5eab3fe5f83b75402fdd63b549e23123b38faf
194 Risk Score

Malware Insights

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

The PDF contains numerous links to a redirector service, masquerading as a book download site. The ML classifier and specific heuristics strongly indicate malicious intent, likely to lead users to malicious content or phishing pages. The embedded links and the document body text, which includes a URL, suggest a lure for downloading files.

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=bsc+3rd+year+maths+books+pdf+download In PDF document text
    • http://jarutuwuf.truvisioncolombia.com/uploads/1/3/1/4/131482975/zinazaw.pdfIn PDF document text
    • http://files.iraqikurdistantours.com/uploads/1/3/1/4/131483719/668d65df.pdfIn PDF document text
    • http://files.gloucestershiregatewaytrust.org.uk/uploads/1/3/1/0/131070207/temalabal.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/1/0431/7963/8942/files/fatalazugegomizaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5511/9513/files/panasowodowuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5976/3617/files/pugejorisilodujifipezomib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/lexical_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/wasemefonukefejaxuwuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/jituweboripepolif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/toromekukofazivesobutoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0985/9999/files/pefimufesatasasogivadovab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4101/2377/files/69029913371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/rijojegizovipevezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/63419095500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0028/0734/files/bandelier_national_monument_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/exxaro_bursary_application_forms_2020.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6F 6004 bytes
SHA-256: b11fd5fc3c8a9ed5842c0c130cf29aea5dc94a3fba66ceffb90d926026b2d048
font_01_sfnt_off000091c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91C6 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00009a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A54 10440 bytes
SHA-256: b3c028908b311974cee98cce559a5abfe73129ee3f3cd5e5eb325b1a417b27c4
font_03_sfnt_off0000be3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE3D 16068 bytes
SHA-256: 5338b60dac2ddcc9fbf81734882903060897ff8c18563aad6864a581beec55c6