Malicious PDF — malware analysis report

Static analysis result for SHA-256 f32bbcdd4a9b7d22…

MALICIOUS

PDF

40.6 KB Created: 2020-07-09 06:53:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: ef11a3322abd3d6a9efc17898e979652 SHA-1: 4c42121ea106ae215c7dc47795cb100f6af4b24d SHA-256: f32bbcdd4a9b7d2273db3b96b31fc5b2e4c0db5a67c8b831e087ed66e6b921f5
184 Risk Score

Malware Insights

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

The PDF contains a prominent link to a redirector URL, which is a common tactic for phishing and malware distribution. The heuristic firings indicate the PDF is designed as a link farm, likely to obscure the final malicious destination. The document body, though partially corrupted, contains the lure text 'Kesiapan menikah pdf' and the malicious URL, reinforcing the phishing attempt.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=kesiapan%20menikah%20pdf In PDF document text
    • http://files.sunriseandpinedesign.com/uploads/1/3/1/0/131071297/9445024.pdfIn PDF document text
    • http://files.benedictusdeus.com/uploads/1/3/0/8/130814711/wekofexunoda_bonud_wukepaz_tipazupawigo.pdfIn PDF document text
    • http://files.memorymapformusic.org/uploads/1/3/0/8/130814711/pevunamikupipet.pdfIn PDF document text
    • http://files.beachfrontbabygearrentals.com/uploads/1/3/0/8/130814337/podureva.pdfIn PDF document text
    • http://files.neperformingartsgroup.org/uploads/1/3/0/9/130969709/lupovawojixidawap.pdfIn PDF document text
    • http://files.evelandfarm.com/uploads/1/3/1/4/131436971/93088aafe1eb3.pdfIn PDF document text
    • http://files.kristysfineart.com/uploads/1/3/0/7/130775282/woxebajegitiwig-tubeluvo-sidemon-zibax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://kovuruboxa660899873.files.wordpress.com/2020/06/rasebeluxozugamiso.pdfIn PDF document text
    • https://dafowamu.files.wordpress.com/2020/07/totokobobew.pdfIn PDF document text
    • https://gazipanobiso.files.wordpress.com/2020/06/63218192119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71860998709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fezusagofetivori.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6507 4784 bytes
SHA-256: 0d6a46aa88b58f28ca17978649059a7944031de1a147fa1440ed03ad7c1b9a18
font_01_sfnt_off0000750e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x750E 9716 bytes
SHA-256: 3919c9a3b2dbd6f221ca1743c10b16c6e4cd6c2d7df332162841333650c26fd6

Open this report in the interactive analyzer, or submit your own file for analysis.