Malicious PDF — malware analysis report

Static analysis result for SHA-256 43d4727fa833740d…

MALICIOUS

PDF

39.7 KB Created: 2020-08-20 23:41:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9768cd05d901eadfe512011b2542db66 SHA-1: f81168940ad99343abf6403cfbef4a48a326676f SHA-256: 43d4727fa833740d51045c5c3611c43d3c85beffe556749c27ee92521aaa3d44
162 Risk Score

Malware Insights

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

The PDF was flagged for containing malicious redirector links and a large number of external links, suggesting a link farm or phishing attempt. The primary malicious URL identified is https://ttraff.com/pify?keyword=bakkhali+song++djpunjab. The document body contains obfuscated text and embedded URLs, further supporting the 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=bakkhali+song++djpunjab In PDF document text
    • http://files.swrgcwomen.org/uploads/1/3/1/4/131452942/1417300.pdfIn PDF document text
    • http://files.fiberenvy.net/uploads/1/3/1/6/131606349/5094ac66492a.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/1/0432/5523/4710/files/98637583467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8152/1569/files/complete_virtual_reality_and_augmented_reality_development_with_unity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4104/4118/files/veduvig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0056/0803/files/lixixupitij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6195/9061/files/process_of_qualitative_data_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8595/3192/files/kupijazawopatote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3869/5846/files/67298870151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9974/1596/files/juzusasiduduz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/77638911070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1332/2398/files/gewujab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9358/0189/files/39977054869.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_off00004768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4768 5456 bytes
SHA-256: 013db49e3c8ddecf2e9766e0d2d672ca79b75b55ba8953c2b539c38dc5f4ea11
font_01_sfnt_off000059e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E6 10436 bytes
SHA-256: 78e165b7c7269be8ac584476ae776c8a479240d2d0bb584fd27adde7fbe6a6a7
font_02_sfnt_off00007cce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCE 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3

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