Malicious PDF — malware analysis report

Static analysis result for SHA-256 98039c76a9bfb599…

MALICIOUS

PDF

49.0 KB Created: 2020-08-14 17:16:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b618d46b8b920045559932f46ab5bd5d SHA-1: 6c2ba4ff44690a28bf1ebd3269b3f51f093e6a1f SHA-256: 98039c76a9bfb599af43bd94cab9636513b3939ac16bc6bbc7b4b9faf5c5abed
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a redirector to malicious infrastructure, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the lure text 'Cinema 4d journey course free' and the malicious URL. The presence of numerous external PDF links suggests an attempt to manipulate search engine results or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=cinema+4d+journey+course+free In PDF document text
    • http://files.wordisart.com/uploads/1/3/0/9/130968921/2694075.pdfIn PDF document text
    • http://files.christianchurchinwv.org/uploads/1/3/1/3/131379340/girexela.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1634/8071/files/pro_rata_allotment_of_shares.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/xotab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0958/4802/files/86781313303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5194/8963/files/miromalul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8915/7532/files/95666558823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9412/2400/files/harmonic_and_anharmonic_oscillator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xiguxalenagidofivixonagez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7772/9432/files/rem_vs_em.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0361/7173/files/nuvezopovuja.pdfIn PDF document text
    • https://forums.androidcentral.com/showthread.php?t=658885&s=64d0cd5b8eadd8f04e7fc7b4f73d0f6cIn 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
    • https://forums.androidcentral.com/showthread.php?t=658885&s=64d0cd5b8eadd8f04e7fc7b4f73d0f6cIn 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7540 5228 bytes
SHA-256: d07b8d6796e28422e87eddbebf29975b512777555dc175b40f13f6021a259e7b
font_01_sfnt_off000086f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F2 9980 bytes
SHA-256: e4643754f9fd175be29d6dfe4aaf6b1e2e72234953fe22ee38fc994220c85fb0
font_02_sfnt_off0000a927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA927 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e