Malicious PDF — malware analysis report

Static analysis result for SHA-256 53b5372d6c7fe6c6…

MALICIOUS

PDF

54.5 KB Created: 2020-08-16 22:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c516cb40f4d32abb95f6803e4a8d9ea SHA-1: 0528416ace2c77b33e98cd64323f72c28df74638 SHA-256: 53b5372d6c7fe6c6eb155ddcbafb475fdc19a5ea704fede74ec79a3ce5853e5a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=environmental+cost+of+quality+report'. This URL is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a lure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. The ML classifier also strongly flagged this PDF as malicious.

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=environmental+cost+of+quality+report In PDF document text
    • http://nojipivi.johnandkathannon.com/uploads/1/3/2/6/132682107/gukalomubud.pdfIn PDF document text
    • http://files.performancearthouston.com/uploads/1/3/0/7/130739007/sosikivevire_woloninusal_jinexodenazabu_vimed.pdfIn PDF document text
    • http://files.foundationjustice.org/uploads/1/3/1/4/131406507/1121421.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/1/0432/7433/8472/files/41933458151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7027/4201/files/vokusolinamuwen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2434/3462/files/20544219696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0509/9675/files/jilezewudobolukajijetuxoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6703/8106/files/the_theory_of_island_biogeography_1967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/basewufuzepegitakufibezuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1325/0972/files/i_believe_in_a_thing_called_love_maurene_goo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9376/7832/files/article_50_brexit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/the_only_exception_chords.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_off000096fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96FA 5404 bytes
SHA-256: fb217e37ce2dc944a5301bbcad0512ebf2489699e85bbd961c6f2914ab894e5b
font_01_sfnt_off0000a955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA955 10420 bytes
SHA-256: 6a28249dda10000069f0200a7e778cc7d9080aed30103e224663408c68dd7dba

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