Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea79db01e8202e06…

MALICIOUS

PDF

40.0 KB Created: 2020-08-24 07:10:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 30651a27dabe733f7e2f66fba70c5572 SHA-1: 66e1874f9b73ff55d7823e83d02afe1312e580b3 SHA-256: ea79db01e8202e06812579d1de199601e5665cc8ded1ec3de91dcaf3f8b6afc2
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector, and another noted a large number of external PDF links, suggesting a link farm. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=listening+answers+of+job+satisfaction+study, which is likely the primary malicious destination.

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=listening+answers+of+job+satisfaction+study In PDF document text
    • http://ganafore.bigislandghosttours.com/uploads/1/3/0/8/130814297/5400947.pdfIn PDF document text
    • http://files.graffitiwgratitude.com/uploads/1/3/0/7/130738814/808e7b1556b9ad.pdfIn PDF document text
    • http://sonotof.trendsterrabella.com/uploads/1/3/2/7/132712062/978203.pdfIn PDF document text
    • http://damov.tilleyrent.com/uploads/1/3/0/7/130738850/9547366.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/1/0432/6958/7104/files/cirrosis_y_varices_esofagicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9209/9477/files/89242825639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/5907/9318/files/autodesk_3ds_max_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/bergamota_doterra_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/jemuduru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/loan_agreement_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4291/9832/files/jonaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/78863291147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/fogifuluradafevixukujir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4146/2174/files/13060401215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6784/2459/files/fabixazifuvusovitoromupig.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 8

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_off00005d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D55 5508 bytes
SHA-256: 9ec5d2c2f12f292d169b945022c44f7679efb84e66cdc0f11ccdea98fe620522
font_01_sfnt_off0000702c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x702C 10212 bytes
SHA-256: fd123c91afa04033e6dfbd211e47d47a87397cb6df371d2e8727a7e202c73bf0

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