Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c8e8eb18fbe9f5…

MALICIOUS

PDF

64.3 KB Created: 2020-08-10 00:03:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 81304809ffa3efffacc97dcd5815c09f SHA-1: 584d747a4d8aa4a0138a91bdfd930ae061ffb824 SHA-256: a8c8e8eb18fbe9f5622cd38437165ad9f06dd9f2c5137e3ce842bc04db443de4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, which points to a URL that appears to be part of a link farm. The document body, though heavily obfuscated, contains a reference to 'haloperidol injetavel bula pdf' and the malicious URL. The presence of a link farm suggests an attempt to distribute malicious content or phish for credentials through a series of redirects.

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=haloperidol+injetavel+bula+pdf In PDF document text
    • http://zupewan.kauffmanfraser.com/uploads/1/3/1/8/131858661/1df9147f4750e.pdfIn PDF document text
    • http://files.naacpmaryland.org/uploads/1/3/0/7/130776712/fesorivaduz.pdfIn PDF document text
    • http://files.williamblakefilmmaker.com/uploads/1/3/1/6/131606454/2472461.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/1/0433/4085/7494/files/sabitulobamusakur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2354/0124/files/gikivixulixoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1395/6006/files/60392708779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/mutujifozodowudabore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2812/7654/files/clifford_the_big_red_dog_story.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9850/3336/files/56313013059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/51821244374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/91079742095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49181926903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/24330190259.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 2

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_off0000bbc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBC7 5092 bytes
SHA-256: b95050e944b9ddd11296ed0058e2cc75048342b9ff0add563e19249dcc426187
font_01_sfnt_off0000cd29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD29 11476 bytes
SHA-256: 87667783101b0f8af89af55f9a224a2f027ca74091a2e75bf2bebc6491e83f78

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