Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dff507507de0ad7…

MALICIOUS

PDF

41.7 KB Created: 2020-08-22 23:10:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b107cf92161872cd100167b18f134d66 SHA-1: 1be235c1b2547d0f8cd16a6fbe11025ef066a60c SHA-256: 4dff507507de0ad7274204eb2fe378225212ada26c7ad9beaf0220cd4a52aa0a
194 Risk Score

Malware Insights

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

The PDF document contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same URL and a title that appears to be a lure. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, suggesting a broader campaign to distribute malicious content. No scripts were extracted from this sample.

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=chori+chori+sapno+video+song In PDF document text
    • http://wimemuzi.sharonhalfordskintherapy.com/uploads/1/3/0/7/130739616/sudipotu.pdfIn PDF document text
    • http://files.topdogracing.com/uploads/1/3/1/6/131606719/livexed.pdfIn PDF document text
    • http://files.durantroadpetresort.com/uploads/1/3/1/4/131452733/1258681.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/sosafokubefexugir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5734/7749/files/93851660309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3584/files/58512104541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/jopigumexiketufutedug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7211/8941/files/25995328158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9694/8382/files/el_poder_curativo_de_la_cabala_completo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3864/5144/files/jisukuwuwamiziwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/1409/4749/files/805200073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5131/7408/files/wumaxidazuzowojan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/92181898542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/chacha_bhatija_bhojpuri_song_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2545/7574/files/cartridges_of_the_world.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 3

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_off00004dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC9 5268 bytes
SHA-256: 8f5c74b8ba61e4fd686dabeb7f158ca3998e1f0ad5841235dc927dacd4d3a657
font_01_sfnt_off00005fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB1 14864 bytes
SHA-256: 63398c5d594eeec40029ac0ef314cb0a3bc7a8093d89f9ff81874a13295255aa
font_02_sfnt_off00008d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6F 3148 bytes
SHA-256: 90e91e1a89e04dde9fd09d4b233088d3b603dc3e70217c928e8f92af3032b3d7

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