Malicious PDF — malware analysis report

Static analysis result for SHA-256 e75716aafa8d5b65…

MALICIOUS

PDF

45.9 KB Created: 2020-08-08 07:50:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65745a019416fc2c6359d9e66ed7c24c SHA-1: e2740b332a2b23ef288a464875bbd82be9b082d2 SHA-256: e75716aafa8d5b657c71c5f53b1dd0af8df8efa6b2ecc475a33c0528ea9f3215
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as search results for 'aramco calendar 2020 pdf', with a primary malicious redirector URL. The document body, though heavily obfuscated, contains references to this URL and other benign-looking PDF links, likely to mask the malicious intent. The presence of a callback lure suggests a potential phishing or social engineering attempt.

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.ru/pify?keyword=aramco+calendar+2020+pdf In PDF document text
    • http://files.3dxmexico.org/uploads/1/3/1/4/131438641/2830269.pdfIn PDF document text
    • http://files.shoreexcursionsambercove.com/uploads/1/3/0/7/130738960/leronavekawul_togifivijiref.pdfIn PDF document text
    • http://files.campcedarwood.org/uploads/1/3/1/8/131871605/migemipa-xidovaker.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/1/0434/2287/5800/files/43341740743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5274/4356/files/effective_advertising_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/elementary_real_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/vigukoxukapexotowuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4223/2725/files/cours_d_agronomie_gnrale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/zagikamifumewesobewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9384/3356/files/glass_animals_gooey_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9473/2953/files/operation_of_two_stroke_engine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9502/3013/files/vce_to_conversion_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2418/5506/files/vujesumux.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 3

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_off00007381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7381 5388 bytes
SHA-256: 530ddf60ab5cbf739c0d8db6cb9d32ce3aa3d4ae0d5f6684e4e586ed390bcbcb
font_01_sfnt_off000085ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85BA 11044 bytes
SHA-256: c2a1f3ca03aac91260837b444ece63e085166100edde41b117fe8be009e9eec7

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