Malicious PDF — malware analysis report

Static analysis result for SHA-256 91c0f0d4d816b08d…

MALICIOUS

PDF

38.4 KB Created: 2020-08-19 20:38:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 722fc80fb2fc12da6dd9b2da88e0dbfa SHA-1: 203daed71cf8173701dd38addeed37e39274ac4d SHA-256: 91c0f0d4d816b08d1d0080a5329bb9fbc178843c00429334c7eaa5c8acd8f1ca
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. This redirector is likely intended to lead the user to a malicious site, potentially for further exploitation or credential harvesting. The document body text, though partially corrupted, mentions 'American flag star stencil template', suggesting a lure to entice clicks.

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.ru/pify?keyword=american+flag+star+stencil+template In PDF document text
    • http://gebodekeb.shimmerandspice.com/uploads/1/3/1/4/131482995/kisojim-pafifidofugok-doganupiwe.pdfIn PDF document text
    • http://puzig.dopeceiling.com/uploads/1/3/1/4/131438474/wozamimoziwe.pdfIn PDF document text
    • http://files.bravohobby.com/uploads/1/3/0/7/130775675/29900.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/1/0432/7417/4632/files/80413770200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/26374042578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/83233921127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7100/3037/files/minecraft_cracked_1._12_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4133/6989/files/beneficiation_of_iron_ore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/86739724342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/39666629179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5100/7638/files/vesapawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1044/6744/files/ametropias_oftalmologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0212/6755/files/96022794747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6334/4280/files/14879433553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2601/4620/files/74493404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8561/7566/files/sekinozamesida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/chopin_ballade_in_g_minor_op_23_no_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4997/5961/files/apollo_1500_gate_opener_manual.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 2

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_off00005717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5717 5324 bytes
SHA-256: c7c3ef51d795ef2c8035d27d02e38ae411fc8598c493a95eb67bb116eeabc924
font_01_sfnt_off00006914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6914 10448 bytes
SHA-256: e2504738f20faa23fcaf470bf282f1c2e53f62d20177b7ac94f4b0e10d1c76dc

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