Malicious PDF — malware analysis report

Static analysis result for SHA-256 b04016f32a8afd66…

MALICIOUS

PDF

53.7 KB Created: 2020-08-19 10:30:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 58f5e97a01f82f04599c2d07a0487e55 SHA-1: 3613c9157190a2c0162e51816ec4cb11a4863b3f SHA-256: b04016f32a8afd669afc4f4af104ee231b2927a848751e5bebbbe12a63be38bc
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Maryland bridge prep guidelines' and includes a URL pointing to a known malicious redirector. This suggests a phishing or scam attempt to direct 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.ru/pify?keyword=maryland+bridge+prep+guidelines In PDF document text
    • http://zumodamog.servicetrackandfield.com/uploads/1/3/1/3/131381464/9548036.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0433/0032/3496/files/gawufatukedojiturenosiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6902/2109/files/36800686682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/35073102227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5167/7856/files/nasibatiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6177/2442/files/pumuzavajadobubileg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4301/9157/files/angielski_gramatyka_chomikuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/1462/0053/files/mellanni_bed_sheet_set_queen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9291/6886/files/31802005641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/buwukepenarunowara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9208/9759/files/kuxodasegivivina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1015/4908/files/83448716590.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_off00008a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A34 1892 bytes
SHA-256: fc68aeaf40df052bfd8fad869eb2ab8eba3010745d9a9c96b39bbbe502158441
font_01_sfnt_off00009317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9317 5372 bytes
SHA-256: 019b0a1f35465b4ecff053b5f44f02fde0753baf94549e18c5fba71899959551
font_02_sfnt_off0000a56a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA56A 10620 bytes
SHA-256: 1c0dddd95f911f75c18b492146f34b8ccbb23f6c33164bed373212ad568118ab

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