Malicious PDF — malware analysis report

Static analysis result for SHA-256 d304fd80d8c3e71b…

MALICIOUS

PDF

51.0 KB Created: 2020-08-07 00:24:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cc8b50f1a26d79369b22bde4b5d50e3 SHA-1: 6f281ac9a9f25082811e4bdc6673e3718e1579d4 SHA-256: d304fd80d8c3e71b048d4bb91eca29e3005c92b46814be66b53229f6d42e3ce1
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'To kill a mockingbird aaron sorkin script pdf' and the malicious URL, suggesting a lure to download further content. The ML classifier strongly supports the malicious nature of this PDF.

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=to+kill+a+mockingbird+aaron+sorkin+script+pdf In PDF document text
    • http://files.friendsofhuggins.org/uploads/1/3/0/7/130776826/1261835.pdfIn PDF document text
    • http://files.thebeachhousestyle.com/uploads/1/3/1/1/131164157/xanuwaw.pdfIn PDF document text
    • http://files.mammalcommunicationlab.com/uploads/1/3/1/3/131380175/9992401.pdfIn PDF document text
    • http://files.strikezoneacademy.net/uploads/1/3/1/8/131871501/safetobesunujaduf.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/1/0428/7689/5398/files/11362292917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3563/8425/files/39790709936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97428896976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3974/2369/files/13782503078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6187/0743/files/bunewiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/junofasogonebusaregu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7029/9038/files/sugawuzeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50306279194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3789/1477/files/pharmacy_technician_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5913/2069/files/wamebal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/zujez.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_off0000874d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x874D 5628 bytes
SHA-256: fb5613a25eace7844c2ce1aeac4fcb037ec2ed79d3438c6cf69f21dd0c381b52
font_01_sfnt_off00009a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A54 10688 bytes
SHA-256: 8821add076e28980f77f11fa9500912d161d8462116e229e8bbdbc4dc6b8dc0d

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