Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f3db55a9dfe375…

MALICIOUS

PDF

41.5 KB Created: 2020-08-23 18:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 11f4236967bfdff5d0a968021f0092df SHA-1: cd926e67ace807e7667aba51e4a11bba08da749d SHA-256: 58f3db55a9dfe37555a76a45576ba6e7e1e1498c4a45ebe9825ca586c31acb0d
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure to download content, which ultimately leads to the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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=mere+bhole+hai+bhandari+ringtone+free In PDF document text
    • http://files.rweirworks.com/uploads/1/3/1/3/131398374/54d60b.pdfIn PDF document text
    • http://files.jillmrichardson.com/uploads/1/3/0/7/130775221/nufadan-naxoletev-sufapubatam.pdfIn PDF document text
    • http://files.publiclandingrestaurant.com/uploads/1/3/1/4/131437378/daf15cdf65c94a5.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/1/0439/1131/5611/files/vudifakodesojolebisadeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0616/3104/files/patojulisironedabijezed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3796/4960/files/cheap_android_phone_with_best_camera_philippines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7806/5055/files/givolimewebelidumawes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0633/6924/files/kuxugadoludowiput.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0840/0280/files/space_in_latex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0645/9029/files/54358721864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4937/6149/files/jodujojewezizajumeximuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/38711006498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/0604/6886/files/c_create.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8851/9074/files/kejijofobekutitasata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7864/7957/files/malayalam_bible_quiz_genesis.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 6

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_off00004dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC3 5136 bytes
SHA-256: 50caebde0e9dc3dc36cd32eff3b27455b8301aa7ef775dda7ff6cb2481b5466c
font_01_sfnt_off00005f35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F35 8800 bytes
SHA-256: 3d97649200febeca6422e98fc44a3c6466e9029d05aebe6f03c318553e669ee2
font_02_sfnt_off00007d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D94 7948 bytes
SHA-256: c9234cc97100a1b939076db1086306ccee0a1b64dcc6376f5e3625a81820c227

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