Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae50a7239a3213f0…

MALICIOUS

PDF

45.4 KB Created: 2020-08-04 02:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc62e32abc7ce5c9b284d6025c808080 SHA-1: 20349b239e5b68dafa2b6f4b70a95558b02e5df4 SHA-256: ae50a7239a3213f06edb41d935cd66709a43c1da50ebfd23c142c18091871664
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, indicating the document's primary purpose is to drive traffic to this malicious site. The presence of numerous PDF links and the specific redirector URL strongly indicate a phishing or malware distribution attempt.

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.cc/pify?keyword=difference+between+bivariate+and+multivariate+analysis+pdf In PDF document text
    • http://files.kaiseribcp.org/uploads/1/3/0/7/130738548/5e2feebdbc6455.pdfIn PDF document text
    • http://files.swiftyouth.org/uploads/1/3/1/4/131454024/tixuro.pdfIn PDF document text
    • http://files.nenevalleydragons.org/uploads/1/3/0/8/130814596/426be.pdfIn PDF document text
    • http://files.practicethehobbyofkings.net/uploads/1/3/0/8/130814475/polonax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/nakefenaxupasoxigega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/jojolidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4621/4564/files/tixalilawogusosili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8233/3856/files/46098366135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/57912191145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3532/8661/files/selolawaxodewafivezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2173/6859/files/pewomexafojapif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/foxetokedojem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/22280097831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9621/0594/files/17977041959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/gizewujekotovetud.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 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABB 5464 bytes
SHA-256: 49ca790cc6bcbc1799ed71828c5ddf2c4e3a931c059c57e35942acd7f7123513
font_01_sfnt_off00006d4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4E 13620 bytes
SHA-256: 18ee75faabcea78cea4d1e180afa83b7ffddf3ad831a91528f7b8e7f4c1616a8
font_02_sfnt_off00009815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9815 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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