Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e50bc6033b45ce5…

MALICIOUS

PDF

48.9 KB Created: 2020-08-14 19:24:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2b4d2245693fc9ceb3d2f65fd139a29 SHA-1: 56ae116d17428a8955a4456a51d4335b58d6df82 SHA-256: 7e50bc6033b45ce5d4dd04d967cac522356db2f19cb68fee0f1b110ad5a504d3
194 Risk Score

Malware Insights

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

This PDF document contains multiple links to a redirector service, which in turn points to a modified application download. The presence of numerous links suggests a link farm or SEO manipulation tactic to drive traffic to the malicious download. The ML classifier strongly indicated maliciousness, and the redirector link is a high-confidence indicator of malicious intent.

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=beauty+plus+premium+mod+apk In PDF document text
    • http://files.monroeyouthcommission.org/uploads/1/3/2/6/132682813/d0a50b2f20218a2.pdfIn PDF document text
    • http://files.diagmal.eu/uploads/1/3/1/6/131637553/710b4b8a.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/1/0430/5800/4117/files/4522674296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7522/1157/files/19131525237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9105/8078/files/varibuserofex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/alimentos_agroecologicos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/8601/5640/files/peter_drucker_biography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15636630427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3272/4124/files/hypothyroidism_in_dogs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96626323422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3583/6063/files/9452130955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/dozonesoxesalira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9589/5707/files/sosidaradifinudakove.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 4

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_off000081f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F5 5320 bytes
SHA-256: 916f4611d0eaf9d46eea064183a0b33cc8ef2d30bd17ee9269eb138185a87432
font_01_sfnt_off000093fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93FD 10140 bytes
SHA-256: 810920567bac10972a65fe6f05a75842f7da7fb882526beca25038fd34366e7c

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