Malicious PDF — malware analysis report

Static analysis result for SHA-256 52e497d589e25882…

MALICIOUS

PDF

37.3 KB Created: 2020-08-21 00:13:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8abff4fbed9a56eb014b0f044ee58508 SHA-1: 28ece652a7ffc713d8580ae9f2b4f379d82c1e3f SHA-256: 52e497d589e25882112c36a321155f4ed24088aa5ecec88b0776a4de9165abbd
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to 'collage maker apk for windows' and the malicious URL, suggesting a lure to download potentially unwanted or malicious software. The presence of a link farm further indicates an attempt to distribute content or traffic through numerous external 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=collage+maker+apk+for+windows In PDF document text
    • http://files.hogaacupuncture.com/uploads/1/3/0/9/130969573/29b3d9.pdfIn PDF document text
    • http://files.bluemountainwine.com/uploads/1/3/1/4/131407977/3d6cd85253.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/1/0428/9835/8432/files/rerotapok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/dumisupawikuxun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/fopusoluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3918/6344/files/brian_weiss_libros_los_milagros_existen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5149/1236/files/6034204001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5326/8642/files/71848447109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/938666080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7416/4638/files/alexitimia_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/jufiweraperanelifawexem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/57202586458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3937/2965/files/google_sheets_insert_row_shortcut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vozazugimutiwobawaxuleg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2705/4237/files/36043466537.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
🗂 Part of campaign: bluemountainwine.com 4 samples

Related samples 1

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_off00005459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5459 5424 bytes
SHA-256: 7c1e5a91df957234bfa0f5e2cf60d8c83e120a14b168262ae25fe8c2dc55bbbf
font_01_sfnt_off000066cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CD 9984 bytes
SHA-256: 1a7e1834d48bca2b9ed0a45182a0863442bda7734b4c11b8ae4b2bd951aa46de

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