Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a7d97d3157dea9b…

MALICIOUS

PDF

43.2 KB Created: 2020-07-30 04:14:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f2e9dc77cdd38537499202ea55cfaf9e SHA-1: 3e044fdf582581722e267e59ebd01f37dc6f21a3 SHA-256: 4a7d97d3157dea9bc491ab069083d94921d9f8844d42ecd89f0fd9add66df3a0
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links redirects to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to file creation, likely to trick users into clicking the malicious 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=cara+buat+file+csv+dan+pdf+spt In PDF document text
    • http://files.leemg.org/uploads/1/3/0/7/130776599/rewitufegasilosufal.pdfIn PDF document text
    • http://files.forevermiafoundation.org/uploads/1/3/0/7/130776676/a89caf5f.pdfIn PDF document text
    • http://files.hcncnewfs.org/uploads/1/3/0/8/130873979/daxigetifus.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/1/0435/0191/2224/files/keseralelavixepitewigef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/xusiwafajeralowolajusavid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2576/7327/files/lajad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6868/5464/files/59333505271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3463/0549/files/77427903288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/xipajazekonazeguladogiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9065/7951/files/zevag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/dulilosinazolaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3028/files/7308231631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3382/1347/files/zirapebevexofogul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/satuzisunoworotodubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/lubobabasetove.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 3

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_off00006c25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C25 5144 bytes
SHA-256: b83c53a7febf891c384f4a105cb98ba7349037ed3ab29c9838b44e54b1a7327b
font_01_sfnt_off00007db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB5 9936 bytes
SHA-256: 5e75bdb31a2ff37807fdba90ad762207ceb67176866ab3a8b7a79e6975338691

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