Malicious PDF — malware analysis report

Static analysis result for SHA-256 38ef15e081cc093a…

MALICIOUS

PDF

39.7 KB Created: 2020-08-20 12:42:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 256abf5ce3d05e368ffffa9fc663800a SHA-1: 4356ee456cac407745fa6f9e83bd0dd65d400c47 SHA-256: 38ef15e081cc093a8093dcb39411d42704ae8392ae75601c0639800fcecfdf2e
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a game guide, but it redirects to a malicious URL. The ML classifier strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a further stage of the attack. No scripts were extracted, limiting the analysis of the attack's execution phase.

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=scribblenauts+unlimited+level+guide In PDF document text
    • http://files.communityland.org/uploads/1/3/1/1/131163957/libawonowubava.pdfIn PDF document text
    • http://files.creativeawarenesscounseling.com/uploads/1/3/1/4/131453133/deralukalaserubuxem.pdfIn PDF document text
    • http://files.travelingschneiders.com/uploads/1/3/1/3/131384127/9907231.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/1/0432/8197/3416/files/fanofegere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9220/4950/files/pefodix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/valowizezipak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2141/7123/files/days_of_the_week_calendar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/zuxudoligobaxewotakupor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/68095400390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1988/3928/files/jivomofopanopitaledobal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/boy_scout_oath_and_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3161/5909/files/bacteriuria_asintomatica_adultos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7699/1653/files/61399679077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0646/5947/files/55170014607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8795/4073/files/38606826094.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 3

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_off00005bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFA 5564 bytes
SHA-256: c93046086adca28dfb3e750ed81b587c3260baab632ef1aaf5ea82e07482084d
font_01_sfnt_off00006ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECB 10436 bytes
SHA-256: 449c0fc26f3f1027a0d41ff97a5939acdb032dbc62185b197173b67cfdbb657e

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