Malicious PDF — malware analysis report

Static analysis result for SHA-256 920bdbbbb11b91a8…

MALICIOUS

PDF

43.3 KB Created: 2020-08-12 10:25:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b68f15bab13194aa916515debd352a10 SHA-1: 209d3188d72e3ae0c16eb69867ba9c4a011ef1ee SHA-256: 920bdbbbb11b91a8e64f2051d018a0938f923e7eaa201b6a9dc3da88d77a046e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link redirects to a known malicious infrastructure at 'https://ttraff.cc/pify?keyword=penyakit+ascariasis+pdf'. This suggests the document is designed to lure users to malicious content under the guise of providing a PDF about a medical condition. The ML classifier strongly supports the malicious verdict.

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=penyakit+ascariasis+pdf In PDF document text
    • http://files.chainofeventsbw.com/uploads/1/3/1/8/131857115/wotokafepoxukusap.pdfIn PDF document text
    • http://jejuwuwas.osatelegraph.org/uploads/1/3/1/3/131383790/fibatofomu-viloko-dinexogazab-kejip.pdfIn PDF document text
    • http://sitoxotu.bewellacupunctureclinic.com/uploads/1/3/1/3/131384169/becce57c.pdfIn PDF document text
    • http://gaxevo.skylineeaglesfootball.org/uploads/1/3/0/7/130776262/e2c4b52cc.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/1/0440/5365/9798/files/25019918278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0127/2729/files/41946323687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3840/7845/files/absceso_pilonidal_tratamiento_antibiotico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8476/7641/files/kitazenixebabawefolivos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/taritewafewarixalinapexem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0105/2327/files/analytical_test_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1248/8343/files/96477467484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/advantages_and_disadvantages_of_captive_insurance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0145/4496/files/electronically_sign_acrobat_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lejozusuxawunulimedobina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2880/6807/files/gta_vice_city_san_andreas_cheats.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 4

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_off00006aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA3 5284 bytes
SHA-256: 7b1568f5bb475fdbfaa2e1b022698f22b7116eec335f1e4bc2e1d404249a4b66
font_01_sfnt_off00007cac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAC 10848 bytes
SHA-256: d364b3f02b0ab1d40fcb2b20002ef641072679e3050843c1730a43363d101b26

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