Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1451dad7ccc7634…

MALICIOUS

PDF

43.1 KB Created: 2020-08-11 13:09:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3148efdc42fef17e91ddc679871ac688 SHA-1: e3b976bed86527a631cc4c535d74db2474a953d0 SHA-256: f1451dad7ccc76342fa7b6674b6854ad9fa79543db5def576b3305f61141f844
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious redirector URL and numerous other URLs, suggesting a link farm or redirection scheme designed to lead users to malicious content.

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=local+agenda+21+pdf In PDF document text
    • http://files.sedonaroadrunners.com/uploads/1/3/1/3/131384777/nagakesoputu.pdfIn PDF document text
    • http://buwog.innuan.org/uploads/1/3/2/6/132695569/jebupusoj.pdfIn PDF document text
    • http://files.afmsupplements.com/uploads/1/3/2/3/132302815/972851.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/1/0433/6871/0294/files/briggs_and_stratton_engine_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2462/9411/files/41183989468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/46330610304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2536/6165/files/zudoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4485/4165/files/womalimilojojinij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dubisetebezurazoxodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/makipur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/94532429736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/ccdc_contracts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2979/8818/files/attestation_assedic_assistant_maternelle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8978/0124/files/cecily_smith_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/mebilipetaloxaw.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_off00006bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB2 5172 bytes
SHA-256: e21f74f2c887b63ac0044f60570184fd0938b4f6833271f9051e6c4d8e271d2a
font_01_sfnt_off00007d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D66 10108 bytes
SHA-256: 6de51e10e3a9d2750973e76e41d45e4f3f728180abce1b37a77540470cc114ef

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