Malicious PDF — malware analysis report

Static analysis result for SHA-256 48fb9a46bb2a51df…

MALICIOUS

PDF

33.2 KB Created: 2020-08-17 07:00:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d95dcf707108bc2bd0cd6144d260930 SHA-1: 2b36ccd6bfedc74639eb510d1ae662b994874ec2 SHA-256: 48fb9a46bb2a51dfb1c2c14fb573f52e896164b5e8543533b7c7376cb2dba755
202 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a download for 'Alliance laundry systems dryer manuals'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and PDF_SEO_LINK_FARM indicates a large number of external PDF links, likely for SEO manipulation or to host further malicious content. The SE_DOWNLOAD_BUTTON heuristic suggests a lure was present. The primary IOC is the malicious redirector URL, which is likely used to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=alliance+laundry+systems+dryer+manuals In PDF document text
    • http://files.14thstreetartistcommunity.com/uploads/1/3/2/6/132695602/jiful_kavomapubuvop.pdfIn PDF document text
    • http://files.essenceofbeautydublin.com/uploads/1/3/1/6/131637057/9362341.pdfIn PDF document text
    • http://pokol.yogibjewelry.com/uploads/1/3/1/4/131409090/216ab92b.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/23535065851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/meredugumitor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5391/6053/files/pathology_a_color_atlas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/55787283467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7218/3703/files/46412061624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2915/2423/files/analog_photography_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/3677/2261/files/63375086722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3898/9718/files/piano_arpeggios_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/89213637822.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 8

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_off0000477f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x477F 5176 bytes
SHA-256: 464e157e82f7c1678e5d42b63aa0ec8d4bb9b7c7781e0f526e31be3579cd8081
font_01_sfnt_off000058fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58FB 9204 bytes
SHA-256: e9ddf686dc7c2d9ae45834ef1934d7f29762234f35f2f9ffdbb8d263b2b6cc7e

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