Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f3eb0372fa1581…

MALICIOUS

PDF

41.8 KB Created: 2020-08-15 01:08:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0eb36bad89026bcc6c20ea017b56ce4 SHA-1: 30b245408352d87257e242b18cd663951c8b4b60 SHA-256: 48f3eb0372fa1581977391bc8d0ad3e39b53e0789503fc88be1bda3314ea9f57
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a redirector infrastructure, identified as malicious. The document body and heuristics suggest a lure to download further content, likely malicious, under the guise of an instruction manual. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination.

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.ru/wb?keyword=bella%20pressure%20cooker%20instruction%20manual In PDF document text
    • http://files.torchpub.com/uploads/1/3/1/4/131406068/9882094.pdfIn PDF document text
    • http://xorazigu.emiliedrawsthings.com/uploads/1/3/2/6/132681464/34658da4.pdfIn PDF document text
    • http://files.collegemoversandhauling.com/uploads/1/3/0/7/130739043/2930670.pdfIn PDF document text
    • http://zegaj.hatfieldpeverelflowerclub.co.uk/uploads/1/3/1/1/131164132/rejepij_lakiged_wusojovire.pdfIn PDF document text
    • http://files.lca-of-tc.org/uploads/1/3/0/7/130738871/1925702.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/1/0439/2920/6939/files/javascript_absolute_beginner_s_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/gixopudetozesipojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2286/6839/files/sorevesabipujesisoxaluku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1584/5541/files/13640892825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/71197309823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/no_ceilings_lil_wayne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8393/2582/files/9186841828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3337/0529/files/developmental_biology_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/46752018035.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_off000064db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DB 5192 bytes
SHA-256: 3c9fff340757369b2b6d3eb9349897c388d24aa834bba341b3c42a3b2eac21f7
font_01_sfnt_off0000766b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x766B 10564 bytes
SHA-256: 2fefa28e18a32c0dd151be9ac19d79e820d145150bff87f927fc85c00c24476f

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