Malicious PDF — malware analysis report

Static analysis result for SHA-256 1923bdd9e01f7702…

MALICIOUS

PDF

40.6 KB Created: 2020-08-20 09:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b9d1a55f552ba4b6286c9541a7436fc SHA-1: e78098031379cb8f069d0f5248a545a687bd31de SHA-256: 1923bdd9e01f7702e7b61e771a702b32dca28321a1c13223a8b483a159aeab9c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link that redirects to malicious infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_UTM_REDIRECTOR_LINK' heuristics. The document body, though heavily obfuscated, contains text referencing 'Google play store pending 2019' and a URL that aligns with the malicious redirector. The presence of numerous PDF links suggests a link farm tactic, likely to obscure the final malicious destination.

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=google+play+store++pending+2019 In PDF document text
    • http://fikuxeni.threadmakers.com/uploads/1/3/0/9/130969060/231695d7a0df403.pdfIn PDF document text
    • http://tanolija.cheesemaegden.com/uploads/1/3/2/3/132303108/e770f718789eaa.pdfIn PDF document text
    • http://files.365downandout.com/uploads/1/3/1/3/131381231/rosapiginaxajir.pdfIn PDF document text
    • http://files.musicalkitestring.com/uploads/1/3/1/1/131164476/8921238.pdfIn PDF document text
    • http://files.elpatrongrillandcantina.com/uploads/1/3/0/8/130813643/d6f0e.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/1/0437/0428/7383/files/active_voice_passive_voice_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99289858455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/0568/6438/files/environmental_mutagenesis_and_toxicity_testing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5508/6742/files/zoguvigezitokopuridipuwof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4629/5959/files/454_big_block_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5693/8646/files/1971364458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2525/0974/files/pujuwafesorufosix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/baramati_taluka_map.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC1 5744 bytes
SHA-256: 3272a05da7c26166608cab9a89d7d4a571ece1d9b117dd192ee7aa9e5c295feb
font_01_sfnt_off00007368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7368 10004 bytes
SHA-256: 51cfde76770f52d9fff0df3d44fbd4e7b81ae637ca37cd90bf73d2f2e9fd931b

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