Malicious PDF — malware analysis report

Static analysis result for SHA-256 9800f18735ba9668…

MALICIOUS

PDF

55.2 KB Created: 2020-08-18 16:03:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 19edadd55777e5783662b7665b83ea50 SHA-1: cf9005006d946de15676a241aa8da146fadd6a51 SHA-256: 9800f18735ba96688ef8327629bdc5b41e70e7cc6e893010acba178107f1eb29
194 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains the same malicious URL. This suggests the primary goal is to lure the user to a malicious site, likely for further exploitation or credential harvesting. The presence of numerous Shopify links, while mostly benign, is characteristic of SEO link farm tactics used to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.ru/pify?keyword=tradu%25C3%25A7%25C3%25A3o+guide+em+ingles In PDF document text
    • http://files.asweetpetitedesigner.com/uploads/1/3/0/7/130775195/080579d8c96.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/rokefavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/biology_bits_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2952/0796/files/tv_azteca_news_reporter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/95725483953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6719/4021/files/niversal_document_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6977/5782/files/53781474643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2637/5071/files/the_flash_s03e09_vodlocker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5289/9231/files/pdf_file_unlock_free.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58C5 6060 bytes
SHA-256: 4779228be7a7cb23390517de3423bfb683324c2e8ed63518a64f8381a0ac90cc
font_01_sfnt_off00006dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAB 5592 bytes
SHA-256: f8a9c8978916b87ea44be41fe9f16d745e6cc978f8eb23080c8f0dbbc563ca8a
font_02_sfnt_off00007ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF2 6020 bytes
SHA-256: 2133a5f10b93d78f841e9b827f362ddf42cbb2496a64983c1077293f6c0f1fe0
font_03_sfnt_off00008f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6E 12408 bytes
SHA-256: e18ee57dd53e95e5b9fdee21b3dc7d8bcb1ec28fcf09d87198cdc9dce9620eaf
font_04_sfnt_off0000b5ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5EF 16968 bytes
SHA-256: 8a52e294e11b0c9a3495393a379db830f4c234f5aed44534de211487f6c40254

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