Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef97802528600821…

MALICIOUS

PDF

44.6 KB Created: 2020-08-18 14:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f34a1298a04dce5be30a8c81c45b3315 SHA-1: 21c348df5e320e99f47d1e23207833b9fde60090 SHA-256: ef97802528600821ccf55352a97672be1ef1317b50d2d6828ca645db3f4118fb
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a link to a known malicious redirector. The document body, though heavily obfuscated, contains the same 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 drive traffic to malicious sites. No scripts were extracted, and the primary malicious activity appears to be redirection.

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=word+formation+processes+folk+etymology+examples In PDF document text
    • http://pinige.shaunstournaments.com/uploads/1/3/0/7/130739169/tukales.pdfIn PDF document text
    • http://files.oakheartcenter.com/uploads/1/3/1/3/131380848/9898760.pdfIn PDF document text
    • http://files.knowyourbusinessplans.com/uploads/1/3/1/8/131858592/8523756.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/1/0447/7508/0087/files/date_format_function_in_oracle_sql.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/24189167203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/economist_may_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2703/8369/files/rawesubev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/nusujajobupajowumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1262/0447/files/59827841509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/81293638852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7236/4445/files/fusubak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9432/7961/files/ssc_stenographer_2020_vacancy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0794/2549/files/tally_accounting_software_shortcut_keys.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9307/2808/files/my_guitar_shop_exercises_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4287/3249/files/79277244699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/65128967507.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 6

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_off00006e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8F 5720 bytes
SHA-256: ffc721853390ecc1d3f2f9282491f4b5a296b5da0a1c56f58fb0810872d35659
font_01_sfnt_off0000820b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x820B 10160 bytes
SHA-256: 22a33eec2ce805e0ce1a2a349f68bbdbaf4c03155ee4fb1251fab3b69738c31d

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