Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8cc5e880736bae2…

MALICIOUS

PDF

43.1 KB Created: 2020-08-22 14:29:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 30279308ae74a49be79e8fe1f491c511 SHA-1: 55f6cdf815e92fc9ef0aa92cbd143f99b68a020a SHA-256: d8cc5e880736bae2fde1ebf19cc4b5a98b3b596d7321b616ddb604ec2c4adf01
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body, though heavily obfuscated, contains a URL that appears to be part of the lure. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring the user to click a link that leads to further malicious content.

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=real+gangster+game++in+jio+phone In PDF document text
    • http://wimexafor.calidreamtravels.com/uploads/1/3/1/0/131069839/bomulepofe-xedipogetig-pidavob.pdfIn PDF document text
    • http://fetuvav.clumsybutcute.com/uploads/1/3/1/4/131437601/568717.pdfIn PDF document text
    • http://juluromi.jamiesquibbs.com/uploads/1/3/0/9/130969744/7667381.pdfIn PDF document text
    • http://judiga.conservatoriumacademy.com/uploads/1/3/1/4/131437886/gokanuwefo.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/1/0437/3518/7605/files/6366802972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/bach_prelude_in_c_major_guitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0955/5107/files/xununikitijotavoxovori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4190/5050/files/86068377744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/ketazevelijujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5768/4375/files/psychology_of_interior_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5522/5763/files/burda_fashion_magazine_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/bodas_de_sangre_simbolos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9485/2252/files/fifototirivatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/extrinsic_pathway_of_apoptosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/auricular_acupuncture_book.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_off00006043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6043 5316 bytes
SHA-256: 44e3e41813fcc3480cc73367fde0c1aaebedfb7c445b1610abef7cd0908f18e2
font_01_sfnt_off00007234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7234 14760 bytes
SHA-256: 7f29b6f5bd6d77626ea8f74387024dafa2837d8a59cdad36254217ea3670d7eb

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