Malicious PDF — malware analysis report

Static analysis result for SHA-256 a341e865c90cfd15…

MALICIOUS

PDF

38.3 KB Created: 2020-08-25 03:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c5ee1a804aabc893a17a375af0fb254b SHA-1: 61b234cb61df070e54217e096e7c44c122d91e60 SHA-256: a341e865c90cfd156d0f8fd295dd812f59c783c3fc3908838bae12bbbb3de01f
202 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body contains a call-to-action phrase, suggesting a lure to trick users into clicking the malicious link. The primary malicious IOC is the redirector URL, which likely leads to further stages of the attack.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=hillsong+calvary+audio In PDF document text
    • http://pemeto.katiamoorsdesigns.com/uploads/1/3/0/9/130969472/b39475f2.pdfIn PDF document text
    • http://rawepiwa.paperboyproductions.net/uploads/1/3/1/1/131163599/5342072.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/1/0430/9581/8397/files/talk_video_kaise_karenge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/jilenilex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xarapidarobumebavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3444/2908/files/introduction_to_statistical_learning_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2906/1032/files/ig323_400_mg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5811/0363/files/wijewilusujuwisog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/tarawivuromigatekav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8243/0117/files/clash_royale_hack_ios_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5690/6918/files/69842939783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3255/8240/files/lodiremorotimisekakikirem.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ABC 4916 bytes
SHA-256: 1f22c5c625fd541ba157d17ae0395fd6f3f6d5375f2d976a1f5b7592c0e3d43f
font_01_sfnt_off00005b64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B64 10300 bytes
SHA-256: 93e5f49455000b1b17c708a9359b4fddd6796b157c568dca2c29baa40a8c4a3f
font_02_sfnt_off00007ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA5 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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