Malicious PDF — malware analysis report

Static analysis result for SHA-256 5230ccc0750b24c8…

MALICIOUS

PDF

42.0 KB Created: 2020-08-14 07:04:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c3daa98b6ccb7f5c752718d49b02dcc SHA-1: 82f9777b474ab0f1ba444f8c246bfdf382eebc88 SHA-256: 5230ccc0750b24c80343262a46800c9350eeccba70461af9e91111f5a788bda6
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, indicative of a link farm. The document body contains a URL that leads to a redirector service, which is likely part of a phishing or scam campaign. The ML classifier also strongly indicated maliciousness.

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=chinnari+chinnari+chiluka+naa+video+song In PDF document text
    • http://files.sistersvacationrentals.net/uploads/1/3/1/4/131408100/3495205.pdfIn PDF document text
    • http://files.ediblegroup.net/uploads/1/3/0/9/130968968/6f69189c5988.pdfIn PDF document text
    • http://files.dontfeeloldinside.com/uploads/1/3/1/3/131383333/371974.pdfIn PDF document text
    • http://wifos.heyhagan.com/uploads/1/3/1/6/131606260/rekumebewoposovovew.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn 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/1/0437/7713/0658/files/48727198929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2743/9526/files/xogoturefegamedosurorinik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/canela_de_velho_dosagem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4085/8527/files/tawujobozen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5491/5993/files/bitaxixorizajimasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/pakibexurodetunazaxupire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4225/7561/files/fabiduv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7852/4831/files/65484851598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1613/4562/files/85203611765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9488/4000/files/31806682615.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
stream_004_off0000626d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x626D 2424 bytes
SHA-256: 9c5d383ab722aa653c0f40c125ecbaeecb5a19c139520b86bc8320d7a388791e
font_00_sfnt_off000050b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50B6 5228 bytes
SHA-256: 5501fc54d951d3f167ce46ec8dc1b046a04414ee419e1c00ac64cfc99c087e8e
font_02_sfnt_off00006d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5A 14476 bytes
SHA-256: 6af8197e6045e8f0844e182ee6852b21d5a245887eefc71384a1b13526e77738

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