Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e4ae5ac7a5457d…

MALICIOUS

PDF

35.7 KB Created: 2020-08-22 20:11:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 832595c52f944550753846d4cb95e6d8 SHA-1: fc91cabf2bd62f952493f7750456a96cee62c9d6 SHA-256: b1e4ae5ac7a5457d59f878eda7583002c5d38800aafdb1f2f1a27b0098339738
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, many pointing to PDF documents hosted on Shopify. One critical heuristic identified a malicious redirector link (https://ttraff.cc/pify?keyword=bolero+top+speed+video), suggesting this PDF is part of a link farm or SEO manipulation scheme. The presence of this malicious redirector indicates a potential for distributing further malicious content or phishing attempts.

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=bolero+top+speed+video In PDF document text
    • http://files.brucedelfosse.com/uploads/1/3/0/7/130775772/1bf557b.pdfIn PDF document text
    • http://files.doramalech.net/uploads/1/3/0/8/130873949/a3118019.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/1/0433/0782/7364/files/maplestory_diligence_guide_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/6270/7620/files/piecewise_functions_worksheet_algebra_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1470/1735/files/kukip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/all_blues_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8509/3272/files/3ds_max_2018_update_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/dilosini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/takazuxakotadadaraz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/24682940468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0928/0933/files/adjectif_espagnol_liste.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0845/6865/files/72974724204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/gezigajiwurewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5700/4192/files/alsager_school_uniform_suppliers.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FFD 4852 bytes
SHA-256: a4f543ad67926829ff7bd36d31e578b771b4e285e4da42d25b1f0c20b5e1dc1b
font_01_sfnt_off00006096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6096 9788 bytes
SHA-256: f1493d85b2ec4e69d0cbaa3575de3316b37e2555c8c96d09f8f1c9659d4c4d5a

Open this report in the interactive analyzer, or submit your own file for analysis.