Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4673a951977a88b…

MALICIOUS

PDF

45.2 KB Created: 2020-08-22 07:47:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94ce801552c208cc143b7633ac2aba60 SHA-1: f277322d02ee55b312f419e0959baf5619593743 SHA-256: d4673a951977a88bd26b706a91e4b4fd47ef4091179fb28a1844d1411098029b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous links, many of which point to external resources, including a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'ebook reader pdf apkpure' and includes the malicious URL. This suggests a social engineering attack aiming to trick users into downloading potentially harmful software or visiting malicious sites.

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=ebook+reader+pdf+apkpure In PDF document text
    • http://files.erp-selection.org/uploads/1/3/2/3/132302780/momigogogimujosise.pdfIn PDF document text
    • http://napopiv.ellawatkinsactor.com/uploads/1/3/0/7/130775164/zaxonufekupigava.pdfIn PDF document text
    • http://files.dinhhoaitram.com/uploads/1/3/2/7/132740361/5218793.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/1/0445/8224/0420/files/arrange_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3019/7910/files/bijumusixiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0832/6812/files/the_reader_by_bernhard_schlink.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6279/6186/files/gumona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0803/1893/files/bepuximupapubajedaserif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/music_certificate_template_printable_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1274/2555/files/jozidigebezosolaxelev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/gavolunejopefotanove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7521/5258/files/android_auto_apk_4pda.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 5

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_off00006714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6714 4632 bytes
SHA-256: e6241b6710154f6d9d2e3992dacce9bd785f4160a4b9fc0332c215e1a46acfa6
font_01_sfnt_off000076dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76DC 10300 bytes
SHA-256: 5cc73af7041400a906547058a24edb030cd0d5d2a016e0a86a5f686fc9b4bf0b
font_02_sfnt_off00009a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A30 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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