Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bda2df92bb6a12a…

MALICIOUS

PDF

55.9 KB Created: 2020-08-25 06:39:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3490e0d096f003c6bf4246476e3ceda SHA-1: 95022a97712e9870a3757e791b874c35d3ceeaae SHA-256: 1bda2df92bb6a12ab2359a2251561c0e48e4a247bedcde5f920483ffaba09b74
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate this PDF is part of a link farm designed to direct users to potentially harmful content. The ML classifier strongly supports the malicious nature of this document.

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=magalong+mamasapano+report In PDF document text
    • http://files.fredkaplanbiographer.com/uploads/1/3/1/4/131437225/6242197.pdfIn PDF document text
    • http://files.alissahartenbaum.com/uploads/1/3/2/6/132683259/6213518.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/1/0434/8710/1094/files/fuwoked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6712/7446/files/67464632537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3246/8904/files/fuxinulakuwuxixopedavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8557/6857/files/kitumofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3364/7525/files/multivariate_data_analysis_7th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/xosomojunetinexetom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/bwwm_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2574/3523/files/aseptic_processing_operation_contamination_control.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2279/4395/files/bahubali_songs_malayalam_320kbps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7746/7288/files/82924044580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0061/9423/files/revisoxonizilu.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 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_off00009240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9240 4884 bytes
SHA-256: 6be6e161fb9966184e602a7fce8bc4c22da55af39ad4bbe52870f7f8705782b6
font_01_sfnt_off0000a2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2C4 9964 bytes
SHA-256: f59f2c8b97ce17407b0d147f93b3a45f5fd2ed4fde1e94f2f383dd65573c105a
font_02_sfnt_off0000c4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D6 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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