Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1cfd99e14a0f865…

MALICIOUS

PDF

39.9 KB Created: 2020-08-19 07:29:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 28d654dd5afd1b86f547bc8cf385b55d SHA-1: 369dec50aac8eb507fadbef32a07fb90cc63a9fa SHA-256: f1cfd99e14a0f865051af38d26f7a7deaf62755cde0ba1f6127186f8ee64e0f5
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to its inclusion of a link farm pointing to a known malicious redirector. The document body contains text related to 'Aplikasi bubble shooter 2019' and includes the malicious URL, suggesting a lure to entice users to click through to potentially harmful content. 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=aplikasi+bubble+shooter+2019 In PDF document text
    • http://files.yasense-excel-opc-live-data.com/uploads/1/3/2/6/132696145/310b99ff.pdfIn PDF document text
    • http://files.kickapoovolleyball.com/uploads/1/3/0/8/130814515/0ef50fec9265.pdfIn PDF document text
    • http://files.yauponberrypress.com/uploads/1/3/2/6/132683463/4986403.pdfIn PDF document text
    • http://files.artfultim.com/uploads/1/3/1/4/131453065/dbe7083d8.pdfIn PDF document text
    • http://files.alwaysthereliving.com/uploads/1/3/2/6/132681625/a621290ef78d1.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/1/0435/2894/5815/files/revomonawirufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8208/7588/files/zoligusidipabuwibavuru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/48676154512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2431/7596/files/ragijegerovoseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9384/3358/files/git_delete_untracked_files.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5570/2425/files/17059951000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8447/1710/files/39158704117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6811/9448/files/careless_whisper_tab.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_off00005bdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDF 5584 bytes
SHA-256: fd80236b3bcc7b9a395825011a7119511428e77f9e3821056258ff987a81175a
font_01_sfnt_off00006ec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC7 10604 bytes
SHA-256: 43e5d4fc0d4428b10bf2ef48c8777cc97764c1db90702d259d0319c0455cce5d

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