Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f94282bfc3a13f4…

MALICIOUS

PDF

37.7 KB Created: 2020-08-24 18:13:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49b66bb33b472290a83171fad52f1e51 SHA-1: 93481350e76be786b4a2907792d58966e7d1c136 SHA-256: 4f94282bfc3a13f461feeffe647011e12731294485c2558d903c6b55fe7844ec
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to a suspicious URL. The document body, though heavily obfuscated, contains the same URL and text related to a "challan form", suggesting a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, one of which is a known malicious redirector.

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=online+challan+form+sargodha+university In PDF document text
    • http://files.wilkinsonbrian.com/uploads/1/3/1/6/131606349/jewivawegilu_kabofivajepawuj_wusiwigopuzo_pivigoweli.pdfIn PDF document text
    • http://files.nikkiconstantine.com.au/uploads/1/3/1/4/131437531/5329989.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7228/2008/files/2986281212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4807/4405/files/47727176603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2823/files/gta_online_guide_biker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2079/5556/files/gelukubasesobun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3035/1770/files/cfdi_version_3._3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0203/5352/files/33377212776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/gewaxubugasetugibusiduf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/23407474129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/69591232357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0042/9731/files/gamagisavuzomol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/molar_volume_of_gas_lab_answers.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 3

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_off0000474e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x474E 5504 bytes
SHA-256: 72f3a66aa04b51fffada16bd013cb5ac4ae4a5ee4a03b2f9f9e03dbbac69dab8
font_01_sfnt_off000059e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E2 9952 bytes
SHA-256: 9427bd7e5401efb2287f320543eda1ea1b3ec47b7c7c758fcf33f0983a8adcb6
font_02_sfnt_off00007bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFE 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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