Malicious PDF — malware analysis report

Static analysis result for SHA-256 17198b7f2eeb7ea7…

MALICIOUS

PDF

44.5 KB Created: 2020-07-28 01:20:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99b5040315dcc23358e44c16e88e855e SHA-1: 3f539cbc08a6d217d5656f5ccf732f221131699c SHA-256: 17198b7f2eeb7ea70bb0dc8f7781060c992e1bb5f9de3f4a36bf1a0f153c3785
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified as a redirector for SEO link farms. The document body, though heavily obfuscated, suggests a lure related to 'Rocket chat android app'. The ML classifier strongly indicates maliciousness, and the heuristics confirm the use of malicious redirector links.

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=rocket+chat+android+app In PDF document text
    • http://files.raananamusic.com/uploads/1/3/1/6/131637679/nefapevosaz.pdfIn PDF document text
    • http://files.lucindaquilts.com/uploads/1/3/1/4/131438260/fejokusixevat_wameriziv.pdfIn PDF document text
    • http://files.indygreencongregations.org/uploads/1/3/0/9/130969160/2855870.pdfIn PDF document text
    • http://files.maritzavives.com/uploads/1/3/2/8/132815346/zotowelew_lotavapibo_zevubebesoden_sodagufeje.pdfIn PDF document text
    • http://files.mazeaudio.com/uploads/1/3/2/7/132740997/mejif_nidotezi_femovidapok_xanejavifuwafe.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/1/0430/1615/9381/files/maxisutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/tuturulunuraxegaxal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5666/8565/files/bofigegele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/68024880669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/xoraporapulijogetulanefig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/60980504053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7831/2355/files/44488800982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/42264056228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6183/7981/files/fekepoziposibegaz.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_off0000720c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x720C 4808 bytes
SHA-256: 0b2e63e589068354a051951fd477ba52659aae81ff9259ee43895ad6747ca37c
font_01_sfnt_off00008249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8249 10264 bytes
SHA-256: 9f24877f50e30c4670e39115a1d2bf3c505528429c974085d2dc338230fe197b

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