Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbaa37699064c145…

MALICIOUS

PDF

41.1 KB Created: 2020-08-05 04:16:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fb7473a7ce5dc0ff2edd2cc92fbd3aca SHA-1: eb62f29fdea0158eb90138832cdb1fee66ab86e2 SHA-256: fbaa37699064c14586615db4b6327c5b594c75226bd486877ac59c8b9d8379d7
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'causes of copd pdf' and includes the malicious URL. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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.com/pify?keyword=causes+of+copd+pdf In PDF document text
    • http://gesikab.eugenias3rdstreet.com/uploads/1/3/1/1/131164312/d52907d6a54a23.pdfIn PDF document text
    • http://files.wallyplastics.com/uploads/1/3/0/8/130813639/61113.pdfIn PDF document text
    • http://files.yogaunme.com/uploads/1/3/0/7/130738830/mezunezotikomipefa.pdfIn PDF document text
    • http://files.joyfulbeginningsschool.org/uploads/1/3/0/7/130775987/lekukujeba_xijuxexupudu.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/1/0433/5792/9621/files/nubufetefefisokabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2157/4049/files/bezirig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/lexoxezumodogexijuvaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5122/9089/files/50885505600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7199/5033/files/38124632322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3078/9800/files/adobe_ebook_reader_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2158/3004/files/natunukuladufebak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0721/2695/files/xarixajezizimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1500/4582/files/ramibokazivewolatodarab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9262/2998/files/25536095841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3681/0135/files/fakifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3622/1351/files/96051162688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/13220298338.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 7

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_off0000640b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640B 4924 bytes
SHA-256: 47aed69019a2b2dd089123c606abe01042e604716a63c7878c5e2b12f00f473a
font_01_sfnt_off000074e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E0 10240 bytes
SHA-256: 72c1734eabeb3e755bcc965a1c500d3d7b02f9f0452fe61008e267e76d0ca5cd

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