Malicious PDF — malware analysis report

Static analysis result for SHA-256 778e5ad208c0a6a1…

MALICIOUS

PDF

43.6 KB Created: 2020-08-05 12:11:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4a3551008276528cc4b1b69c06c1203 SHA-1: 9212c60dede059692e0959f31dcdc995b5b7b2aa SHA-256: 778e5ad208c0a6a141a90de59b2b83e98622c293c78d34a6acf9fc76337d2b61
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains a URL that appears to be part of a lure for 'paperstream capture manual name'. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely to redirect users to malicious content or phishing pages.

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/wb?keyword=paperstream%20capture%20manual%20name In PDF document text
    • http://files.helpingthoseleftbehind.com/uploads/1/3/0/9/130969772/8601755.pdfIn PDF document text
    • http://files.jessrimington.org/uploads/1/3/0/7/130775971/608b9b5c72.pdfIn PDF document text
    • http://files.eurasiandebate.com/uploads/1/3/1/6/131636692/vajaguzafire-pakaveme-legavifoxegug.pdfIn PDF document text
    • http://dupunu.cassandras-corner.com/uploads/1/3/0/7/130738993/49fbd1f.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/1/0428/2833/3219/files/55317444237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5961/8716/files/tifun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1064/4377/files/dariboxofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1361/0404/files/predicate_sentence_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/moxudenolaruxorurafugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/50279447098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5081520916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7978/5886/files/forewizoboretatolir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/kisah_lengkap_ashabul_kahfi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/calculus_early_transcendentals_briggs_cochran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6719/4021/files/liradabasajegewodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0988/4838/files/wutokuwitijasixejajagoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/nejunefuxogalo.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 6

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_off00006513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6513 5080 bytes
SHA-256: 9b842e6312db372a3a6794a9fe31d606049e3c119c68a3f0cf10d4eaf6122ad7
font_01_sfnt_off00007644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7644 13360 bytes
SHA-256: f618c26955324c008f61c2715a91beef99b7cca920e40c0027ae60b2ddc7e5cf

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