Malicious PDF — malware analysis report

Static analysis result for SHA-256 e49f7e94ff4150f3…

MALICIOUS

PDF

43.1 KB Created: 2020-08-07 06:17:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f04c26affd8fde963dc56efa3a4bcb7 SHA-1: 20d66d5ad5bc42a5c2935aeb90beb00fd5f2c458 SHA-256: e49f7e94ff4150f377ff76d245b0987b962778e73c7ce7b4c18345044a6aa1b0
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting the document's primary purpose is to distribute or link to numerous other PDFs, potentially for SEO manipulation or to host malicious content. The presence of a malicious redirector URL further supports a malicious intent.

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=atividades+para+educa%25C3%25A7%25C3%25A3o+infantil+5+anos+alfabeto+pdf In PDF document text
    • http://guxedoru.hoggardstudentservices.com/uploads/1/3/0/7/130776257/4ccb475fcc.pdfIn PDF document text
    • http://files.raewyncaisley.com/uploads/1/3/2/6/132680784/sibutubatokune_xujowawase_rudavelol.pdfIn PDF document text
    • http://files.dogparkbook.com/uploads/1/3/1/3/131380625/9219424.pdfIn PDF document text
    • http://kimilarop.homelifechildandhome.com.au/uploads/1/3/1/3/131384429/8720703.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/1/0447/5237/1863/files/apprendre_les_accords_guitare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/rutinakamobase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/75610755684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/padik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2756/0610/files/mini_international_neuropsychiatric_interview_6._0_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8780/5081/files/manny_ramirez_net_worth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/25417720156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6237/8152/files/4433291195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nuvororixepexovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/pizewepakilevetameguruve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/temijekozuwoliboxon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/8968841366.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_off0000617e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617E 5960 bytes
SHA-256: b9170439bf613e950466c3cd034d76a0cb28850a4761771480576fd74de36c3d
font_01_sfnt_off00007509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7509 13540 bytes
SHA-256: ffbbb774ff2b518613f764a4ec3659d24d75b07d3a2b2426283da955bd864910

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