Malicious PDF — malware analysis report

Static analysis result for SHA-256 7826d46157ae4f5b…

MALICIOUS

PDF

43.8 KB Created: 2020-08-10 01:28:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4b127ad27ab7132e1d45435c7611a84 SHA-1: 9a386ca5c1f371ddb45c0feb15ca70d9a3279b09 SHA-256: 7826d46157ae4f5b4e178a479347f67ac00c3b2f4d2c5bc0cde69ef992382bf3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating they lead to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests a phishing or malware distribution attempt via a link farm.

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=artaud+van+gogh+el+suicidado+de+la+sociedad+pdf In PDF document text
    • http://files.shininglcc.org/uploads/1/3/2/8/132815916/foxoguwuxi_tarupak_zumasopixivim_gufewimugebivej.pdfIn PDF document text
    • http://files.steadfastanimalsolutions.com/uploads/1/3/1/3/131383630/9911318.pdfIn PDF document text
    • http://files.thecandyshopprints.com/uploads/1/3/1/6/131637147/1162273.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/1/0435/4814/7867/files/kilenaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/lenovo_11e_chromebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/1870/2247/files/say_something_ukulele_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3501/7884/files/bavulanolewetaraxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5477/4949/files/74041577516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7845/1351/files/gididugoxisitaroda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7219/1641/files/81645248637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3754/7929/files/15_minute_binary_options_strategy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7310/6083/files/kinematic_equations_for_uniformly_accelerated_motion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1708/3803/files/dobokom.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_off000068e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E2 5464 bytes
SHA-256: bb1a0dfa0d00180315686d3120b381ae5ebed03ac4321e0fdccc6188e7227c20
font_01_sfnt_off00007b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B82 11356 bytes
SHA-256: 252e4f01d82b2c03fd48926cffe586631406e9cd27e8a0f692e7ab468b07cbda

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