Malicious PDF — malware analysis report

Static analysis result for SHA-256 021a07ef6f7faa03…

MALICIOUS

PDF

38.8 KB Created: 2020-08-16 20:51:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76837f1bfa4b04b11a9f8d19eddb4136 SHA-1: 38bb3be62ade071dd42dbd0b95dfcf9e5db39c3b SHA-256: 021a07ef6f7faa031b36559f5591c9e5b17c791c3a11c90b3a2552f77832724b
162 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body text, though partially obfuscated, includes the same redirector URL and references to 'Blue prism file from website', suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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/pify?keyword=blue+prism++file+from+website In PDF document text
    • http://files.mrsduganshomeroom.com/uploads/1/3/0/8/130814914/marekarokifes-gagigutom.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/1/0431/6404/1373/files/44624917609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/30929203950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3863/6192/files/candide_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/kenuwozafureluxum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2516/5470/files/tosabexerofij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zinigezumapafukutogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6351/7092/files/nutricion_el_embarazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/80278007767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/dazorepobidod.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 1

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_off00005a86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A86 5120 bytes
SHA-256: 472095516cdfab2eee91b3309b8aaf1a93c66fdfc96013038c77bb120ab6e9de
font_01_sfnt_off00006bee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEE 10128 bytes
SHA-256: 820fc8e7b74da2cc5f5dce670a6aaf54fa8456f6aa9f647b0101672380e08d1b

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