Malicious PDF — malware analysis report

Static analysis result for SHA-256 28c8f2af4fcd7669…

MALICIOUS

PDF

48.7 KB Created: 2020-08-07 20:07:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf595db13be4892cc058aebd41ab93cf SHA-1: e65558125e5686b284564c9411ee11e605819433 SHA-256: 28c8f2af4fcd76698c4e2c716335f04cf4d1215374bfdff94219f65956f051b8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to redirectors and a link farm, suggesting a phishing or malware distribution campaign. The primary malicious URL identified is a redirector designed to obscure the final destination. The document body, though heavily obfuscated, contains references to URLs that are likely part of this distribution scheme.

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=bard+s+tale+2+manual+pdf In PDF document text
    • http://files.theprideofmayfield.org/uploads/1/3/1/3/131380258/ralaborojusamujosu.pdfIn PDF document text
    • http://files.p-l-a-i-d.net/uploads/1/3/1/4/131437094/gutixikumejunis.pdfIn PDF document text
    • http://files.srrlsf.com/uploads/1/3/1/3/131380868/4f04903295aa5.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/1/0435/3438/5303/files/53488484775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/puxowabubomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/26443252833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9350/5688/files/lopud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/sosevurogavefogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0491/2031/files/tea_released_tests.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8068/7520/files/pibawafujeximavekilav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4836/9319/files/68237229769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5269/3654/files/65061203801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/pozegiji.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_off0000810a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x810A 5368 bytes
SHA-256: bbb646e040f96c82883e1df9dea736c54d0480fa6d3259d3a3444052db5541b3
font_01_sfnt_off00009334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9334 10340 bytes
SHA-256: e1c31c137e7ed7dc5f8168b6b1e8da3cdd7cfb33af1766b18f05ed1d961483a5

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